Cataract Thesis Topics for MS Ophthalmology/DNB ophthalmology
This collection of cataract thesis topics for MS Ophthalmology is intended for residents looking for practical dissertation questions across preoperative biometry, cataract morphology, phacoemulsification and manual small incision cataract surgery, corneal endothelial change, refractive outcomes, systemic disease, glaucoma and pseudoexfoliation, postoperative complications, paediatric and traumatic cataract, and service-delivery outcomes. The emphasis is on designs that can usually be completed within one thesis period using patients, examinations, operative records and investigations already available in a teaching ophthalmology department. The same framework can be used to turn cataract research topics for MS Ophthalmology into a focused MS Ophthalmology cataract protocol or MS Ophthalmology cataract synopsis.
Last reviewed and updated: September 2026 · 2026–27 admissions
Preoperative Assessment, Biometry and Intraocular Lens Power Calculation
Agreement between optical biometry and contact ultrasound biometry for axial length measurement in adults with age-related cataract undergoing surgery, using same-visit measurements and postoperative refractive prediction error at six weeks: a prospective comparative agreement study.
Agreement between optical biometry and immersion ultrasound biometry for axial length measurement in eyes with dense age-related cataract, assessing measurement difference and postoperative spherical equivalent prediction error at six weeks: a prospective device-comparison study.
Diagnostic yield of optical biometry compared with contact ultrasound biometry for obtaining axial length measurements in patients with mature or dense age-related cataract scheduled for surgery: a prospective comparative cross-sectional study using successful measurement acquisition as the primary outcome.
Correlation of axial length measured by optical biometry with postoperative spherical equivalent refractive error at six weeks in adults undergoing uncomplicated phacoemulsification with monofocal intraocular lens implantation: a prospective observational analytical study.
Correlation of anterior chamber depth measured by optical biometry with postoperative spherical equivalent refractive prediction error at six weeks in adults undergoing uncomplicated cataract surgery with monofocal intraocular lens implantation: a prospective observational analytical study.
Agreement between automated keratometry and optical biometry-derived keratometry in adults with age-related cataract, assessing flat curvature, steep curvature, corneal astigmatism, and postoperative refractive prediction error at six weeks: a prospective device-agreement study.
Agreement between manual keratometry and optical biometry-derived keratometry in patients with age-related cataract undergoing surgery, assessing corneal curvature and postoperative spherical equivalent prediction error at six weeks: a prospective device-comparison study.
Correlation of preoperative corneal astigmatism measured by optical biometry with postoperative refractive cylinder at six weeks in patients undergoing uncomplicated cataract surgery with monofocal intraocular lens implantation: a prospective observational analytical study.
Association of axial length category with absolute postoperative refractive prediction error at six weeks among adults undergoing uncomplicated cataract surgery using routine intraocular lens power calculation methods: a prospective observational analytical study.
Comparative postoperative refractive prediction error at six weeks in eyes with short, average, and long axial length undergoing uncomplicated cataract surgery with monofocal intraocular lens implantation: a prospective comparative observational study.
Association of mature cataract density with failure of optical biometry and requirement for ultrasound axial length measurement among adults scheduled for cataract surgery: a hospital-based cross-sectional analytical study using successful optical measurement as the outcome.
Agreement between repeated optical biometry measurements of axial length, anterior chamber depth, and keratometry in adults with age-related cataract: a prospective intra-observer reliability study using three consecutive same-visit measurements.
Inter-observer agreement for contact ultrasound axial length measurements performed by trained ophthalmology residents in patients with dense age-related cataract: a prospective reliability study using consecutive masked measurements during the same preoperative visit.
Association of preoperative tear film instability with variability of repeated keratometry measurements in adults scheduled for cataract surgery, comparing patients with and without clinically diagnosed dry eye disease: a prospective analytical study using same-visit measurements.
Comparative keratometry repeatability before and fifteen minutes after lubricating eye drop instillation in cataract patients with tear film instability, assessing within-eye variation in corneal power: a prospective repeated-measures observational study.
Correlation of central corneal thickness with keratometric corneal power and postoperative spherical equivalent refractive error at six weeks in adults undergoing uncomplicated cataract surgery: a prospective observational analytical study.
Association of preoperative pupil diameter with successful optical biometry acquisition and measurement repeatability among adults with age-related cataract: a hospital-based cross-sectional analytical study using same-visit repeated measurements.
Agreement between resident-performed and experienced examiner-performed optical biometry measurements of axial length and keratometry in patients scheduled for cataract surgery: a prospective observer-agreement study using measurements obtained during the same visit.
Comparative postoperative refractive prediction error at six weeks between eyes measured by optical biometry and eyes requiring ultrasound biometry because of dense cataract: a prospective comparative observational study after uncomplicated monofocal intraocular lens implantation.
Association of preoperative biometric measurement variability with absolute spherical equivalent refractive prediction error at six weeks after uncomplicated cataract surgery with monofocal intraocular lens implantation: a prospective observational analytical study.
Cataract Morphology, Severity and Visual Function
Correlation of age-related cataract morphology and clinical severity with presenting best corrected visual acuity among adults attending a tertiary teaching hospital: a hospital-based cross-sectional analytical study using standardized slit-lamp cataract grading at initial examination.
Comparative best corrected visual acuity and contrast sensitivity in patients with predominantly nuclear, cortical, and posterior subcapsular age-related cataract: a comparative cross-sectional study using standardized preoperative visual function testing during the same visit.
Association of nuclear cataract severity with myopic shift in spherical equivalent refraction among adults with age-related cataract and no previous ocular surgery: a hospital-based cross-sectional analytical study.
Correlation of posterior subcapsular cataract severity with near visual acuity and distance best corrected visual acuity among adults presenting for cataract evaluation: a hospital-based cross-sectional analytical study using standardized slit-lamp grading.
Association of cataract morphology with patient-reported visual disability measured by the National Eye Institute Visual Function Questionnaire among adults awaiting cataract surgery: a hospital-based cross-sectional analytical study.
Correlation of presenting visual acuity with cataract density in patients with mature and hypermature age-related cataract attending a tertiary hospital: a cross-sectional analytical study using standardized slit-lamp grading at presentation.
Association of symptom duration before hospital presentation with cataract maturity, presenting visual acuity, and lens-induced complications among adults with age-related cataract: a hospital-based cross-sectional analytical study.
Comparative demographic and clinical characteristics of patients presenting with mature or hypermature cataract and patients presenting with immature age-related cataract: a comparative cross-sectional study assessing visual acuity, symptom duration, and referral pathway.
Association of rural residence and travel distance with advanced cataract stage and presenting visual acuity among adults attending a tertiary teaching hospital: a hospital-based cross-sectional analytical study.
Association of educational status and socioeconomic factors with delayed presentation and mature cataract among adults seeking first-time cataract evaluation: a hospital-based cross-sectional analytical study using symptom-to-presentation interval and cataract stage as outcomes.
Correlation of lens opacity severity with glare-related visual difficulty among adults with age-related cataract: a hospital-based cross-sectional analytical study comparing standardized slit-lamp grading with patient-reported glare during routine preoperative evaluation.
Comparative visual function in unilateral advanced cataract and bilateral advanced cataract among adults awaiting surgery: a comparative cross-sectional study assessing best corrected visual acuity and National Eye Institute Visual Function Questionnaire score.
Association of posterior subcapsular cataract with disproportionately reduced visual acuity compared with nuclear cataract of similar clinical grade: a comparative cross-sectional analytical study performed during preoperative assessment.
Inter-observer agreement between ophthalmology residents and cataract surgeons for standardized clinical grading of nuclear, cortical, and posterior subcapsular cataract severity: a prospective observer-agreement study using independent slit-lamp examinations during the same visit.
Intra-observer repeatability of standardized slit-lamp cataract grading among ophthalmology residents examining adults with age-related cataract: a prospective reliability study using repeated masked grading of the same patients during one session.
Association of unilateral dense cataract with anisometropia and binocular visual difficulty among adults presenting for cataract surgery: a hospital-based cross-sectional analytical study assessing manifest refraction and patient-reported visual function.
Correlation of cataract severity with inability to perform common daily activities among elderly adults awaiting surgery: a hospital-based cross-sectional analytical study using best corrected visual acuity and a validated visual function questionnaire.
Comparative cataract morphology and presenting visual acuity among adults aged fifty to sixty-four years and those aged sixty-five years or older: a comparative cross-sectional study using standardized slit-lamp assessment.
Association of previous prolonged topical corticosteroid exposure with posterior subcapsular cataract severity and presenting best corrected visual acuity among adults without previous intraocular surgery: a hospital-based cross-sectional analytical study.
Clinical profile of lens-induced ocular complications among patients with mature or hypermature cataract, and association of presentation delay with intraocular pressure and presenting visual acuity: a hospital-based cross-sectional analytical study.
Phacoemulsification and Manual Small Incision Cataract Surgery
Comparative best corrected visual acuity and spherical equivalent refractive outcome at six weeks after uncomplicated phacoemulsification versus manual small incision cataract surgery for age-related cataract: a prospective comparative observational study.
Comparative surgically induced astigmatism at six weeks after uncomplicated phacoemulsification and manual small incision cataract surgery in adults with age-related cataract: a prospective comparative observational study using preoperative and postoperative keratometry.
Comparative operative duration and best corrected visual acuity at six weeks after phacoemulsification versus manual small incision cataract surgery for uncomplicated age-related cataract: a prospective comparative observational study.
Comparative corneal endothelial cell loss at three months after uncomplicated phacoemulsification and manual small incision cataract surgery in adults with age-related cataract: a prospective comparative observational study using specular microscopy.
Comparative central corneal thickness change at one week and one month after phacoemulsification versus manual small incision cataract surgery for age-related cataract: a prospective comparative observational study using pachymetry.
Comparative postoperative anterior chamber inflammation at one day and one week after phacoemulsification versus manual small incision cataract surgery for uncomplicated age-related cataract: a prospective comparative observational study.
Comparative uncorrected distance visual acuity recovery at one day, one week, and six weeks after phacoemulsification versus manual small incision cataract surgery: a prospective comparative observational study in adults with uncomplicated age-related cataract.
Comparative postoperative corneal oedema at one day and one week after phacoemulsification versus manual small incision cataract surgery for dense age-related cataract: a prospective comparative observational study using standardized slit-lamp grading.
Association of cataract nuclear hardness with operative time and best corrected visual acuity at six weeks after manual small incision cataract surgery: a prospective observational analytical study in adults with uncomplicated age-related cataract.
Association of cataract nuclear hardness with cumulative ultrasound energy and corneal endothelial cell loss at three months after uncomplicated phacoemulsification: a prospective observational analytical study in adults with age-related cataract.
Comparative postoperative pain and foreign-body sensation during the first week after phacoemulsification versus manual small incision cataract surgery: a prospective comparative observational study in adults undergoing uncomplicated surgery for age-related cataract.
Comparative spherical equivalent refractive prediction error at six weeks after phacoemulsification versus manual small incision cataract surgery using monofocal intraocular lens implantation: a prospective comparative observational study.
Association of incision size with surgically induced astigmatism at six weeks after manual small incision cataract surgery in adults with age-related cataract: a prospective observational analytical study using preoperative and postoperative keratometry.
Association of superior versus temporal incision location with surgically induced astigmatism at six weeks after manual small incision cataract surgery: a prospective comparative observational study in adults with uncomplicated age-related cataract.
Comparative corneal endothelial cell density change at three months after temporal versus superior manual small incision cataract surgery in adults with age-related cataract: a prospective comparative observational study.
Association of surgeon experience level with operative duration and predefined intraoperative complication frequency during supervised manual small incision cataract surgery performed in a teaching hospital: a prospective observational analytical study.
Association of surgeon experience level with operative duration and predefined intraoperative complications during supervised phacoemulsification for uncomplicated age-related cataract: a prospective observational analytical study in a teaching hospital.
Comparative six-week visual outcome of resident-performed supervised manual small incision cataract surgery and consultant-performed manual small incision cataract surgery in uncomplicated age-related cataract: a prospective comparative observational study.
Comparative six-week visual outcome of resident-performed supervised phacoemulsification and consultant-performed phacoemulsification in uncomplicated age-related cataract: a prospective comparative observational study assessing best corrected visual acuity and refractive error.
Association of preoperative cataract density with conversion from planned phacoemulsification to manual small incision cataract surgery and six-week visual outcome: a prospective observational analytical study in adults undergoing cataract surgery.
Corneal and Endothelial Changes After Cataract Surgery
Correlation of preoperative corneal endothelial cell density with percentage endothelial cell loss at three months after uncomplicated phacoemulsification for age-related cataract: a prospective observational analytical study using specular microscopy.
Correlation of preoperative corneal endothelial cell density with central corneal thickness at one week and one month after uncomplicated phacoemulsification: a prospective observational analytical study in adults with age-related cataract.
Association of cumulative ultrasound energy with corneal endothelial cell loss at three months after uncomplicated phacoemulsification for age-related cataract: a prospective observational analytical study using operative records and specular microscopy.
Association of phacoemulsification time with central corneal thickness increase at one week after uncomplicated surgery for age-related cataract: a prospective observational analytical study using preoperative and postoperative pachymetry.
Comparative endothelial cell loss at three months after uncomplicated phacoemulsification in eyes with soft, moderate, and hard nuclear cataract: a prospective comparative observational study using standardized nuclear grading.
Comparative endothelial cell loss at three months after cataract surgery in adults with diabetes mellitus and adults without diabetes mellitus: a prospective comparative observational study using preoperative and postoperative specular microscopy.
Comparative central corneal thickness at one week and one month after cataract surgery in patients with diabetes mellitus and age-matched patients without diabetes mellitus: a prospective comparative observational study.
Association of anterior chamber depth with percentage corneal endothelial cell loss at three months after uncomplicated phacoemulsification for age-related cataract: a prospective observational analytical study using optical biometry and specular microscopy.
Association of axial length with percentage corneal endothelial cell loss at three months after uncomplicated phacoemulsification in adults with age-related cataract: a prospective observational analytical study.
Association of operative duration with percentage endothelial cell loss at three months after manual small incision cataract surgery for dense age-related cataract: a prospective observational analytical study using specular microscopy.
Comparative endothelial cell loss at three months after superior versus temporal manual small incision cataract surgery for age-related cataract: a prospective comparative observational study using preoperative and postoperative specular microscopy.
Correlation of corneal oedema grade at postoperative day one with endothelial cell loss at three months after uncomplicated phacoemulsification: a prospective observational analytical study in adults with age-related cataract.
Correlation of postoperative central corneal thickness at one week with best corrected visual acuity at six weeks after uncomplicated cataract surgery: a prospective observational analytical study in adults with age-related cataract.
Comparative endothelial cell morphology at three months after phacoemulsification and manual small incision cataract surgery, assessing coefficient of cell-size variation and percentage of hexagonal cells: a prospective comparative observational study.
Association of preoperative central corneal thickness with early postoperative corneal oedema after uncomplicated phacoemulsification for age-related cataract: a prospective observational analytical study using pachymetry and standardized slit-lamp grading.
Association of preoperative endothelial cell density with clinically significant corneal oedema on postoperative day one after uncomplicated phacoemulsification: a prospective observational analytical study in adults with age-related cataract.
Comparative endothelial cell loss after uncomplicated cataract surgery in patients with pseudoexfoliation syndrome and patients without pseudoexfoliation syndrome: a prospective comparative observational study using specular microscopy at three months.
Comparative endothelial cell loss at three months after uncomplicated cataract surgery in eyes with shallow and normal anterior chamber depth: a prospective comparative observational study using optical biometry and specular microscopy.
Correlation of percentage endothelial cell loss with best corrected visual acuity at three months after uncomplicated cataract surgery for dense age-related cataract: a prospective observational analytical study.
Association of postoperative anterior chamber inflammation at one week with corneal endothelial cell loss at three months after uncomplicated phacoemulsification: a prospective observational analytical study in adults with age-related cataract.
Astigmatism and Refractive Outcomes After Cataract Surgery
Correlation of preoperative keratometric astigmatism with postoperative refractive cylinder at six weeks after uncomplicated cataract surgery with monofocal intraocular lens implantation: a prospective observational analytical study in adults with age-related cataract.
Comparative surgically induced astigmatism at six weeks after superior versus temporal manual small incision cataract surgery in adults with age-related cataract: a prospective comparative observational study using vector analysis of keratometric measurements.
Comparative surgically induced astigmatism at six weeks after phacoemulsification and manual small incision cataract surgery in eyes with similar preoperative corneal astigmatism: a prospective comparative observational study.
Association of preoperative corneal astigmatism magnitude with uncorrected distance visual acuity at six weeks after monofocal intraocular lens implantation: a prospective observational analytical study in uncomplicated age-related cataract.
Association of incision length with surgically induced astigmatism at six weeks after manual small incision cataract surgery: a prospective observational analytical study in adults undergoing uncomplicated surgery for age-related cataract.
Association of incision location with axis and magnitude of postoperative corneal astigmatism at six weeks after manual small incision cataract surgery: a prospective observational analytical study in adults with age-related cataract.
Comparative postoperative refractive cylinder at six weeks after temporal and superior manual small incision cataract surgery in adults with preoperative against-the-rule astigmatism: a prospective comparative observational study.
Correlation of postoperative refractive cylinder with patient-reported spectacle dependence at three months after uncomplicated cataract surgery with monofocal intraocular lens implantation: a prospective observational analytical study.
Association of absolute spherical equivalent prediction error with uncorrected distance visual acuity at six weeks after uncomplicated cataract surgery: a prospective observational analytical study in adults receiving monofocal intraocular lenses.
Comparative absolute spherical equivalent prediction error at six weeks in eyes with short, average, and long axial length after uncomplicated cataract surgery with monofocal intraocular lens implantation: a prospective comparative observational study.
Association of keratometry measurement variability with postoperative spherical equivalent prediction error at six weeks after uncomplicated cataract surgery: a prospective observational analytical study in adults with age-related cataract.
Comparative postoperative refractive prediction error at six weeks in patients with dry eye disease and patients without dry eye disease undergoing uncomplicated cataract surgery: a prospective comparative observational study.
Association of preoperative tear film breakup time with variability in keratometry and postoperative refractive prediction error at six weeks after uncomplicated cataract surgery: a prospective observational analytical study.
Correlation of postoperative spherical equivalent refractive error with National Eye Institute Visual Function Questionnaire score at three months after uncomplicated bilateral or unilateral cataract surgery: a prospective observational analytical study.
Comparative refractive outcome at six weeks after cataract surgery in patients with preoperative regular astigmatism and patients with minimal astigmatism: a prospective comparative observational study using spherical equivalent and refractive cylinder.
Association of corneal scar-induced irregular astigmatism with postoperative best corrected visual acuity at six weeks after uncomplicated cataract surgery: a prospective observational analytical study in adults with stable peripheral or paracentral corneal scars.
Agreement between automated refraction and subjective refraction for postoperative spherical equivalent and cylinder at six weeks after uncomplicated cataract surgery: a prospective method-agreement study in adults receiving monofocal intraocular lenses.
Correlation of residual postoperative astigmatism with uncorrected intermediate and distance visual acuity at three months after uncomplicated cataract surgery with monofocal intraocular lens implantation: a prospective observational analytical study.
Association of postoperative spherical equivalent prediction error with preoperative axial length, keratometry, and anterior chamber depth after uncomplicated cataract surgery: a prospective multivariable observational study with refractive assessment at six weeks.
Inter-observer agreement between ophthalmology residents and optometrists for subjective postoperative refraction at six weeks after uncomplicated cataract surgery: a prospective observer-agreement study assessing spherical equivalent and refractive cylinder.
Cataract in Diabetes Mellitus and Systemic Disease
Comparative cataract morphology and age at surgical presentation in adults with diabetes mellitus and adults without diabetes mellitus: a hospital-based comparative cross-sectional study using standardized slit-lamp grading and presenting best corrected visual acuity.
Association of diabetes mellitus duration with cataract severity and age at presentation among adults scheduled for cataract surgery: a hospital-based cross-sectional analytical study using standardized lens opacity grading.
Association of glycaemic control category with cataract morphology and severity among adults with diabetes mellitus undergoing preoperative cataract evaluation: a hospital-based cross-sectional analytical study using recent glycated haemoglobin measurement and slit-lamp grading.
Comparative best corrected visual acuity at six weeks after uncomplicated cataract surgery in patients with diabetes mellitus without retinopathy and patients without diabetes mellitus: a prospective comparative observational study.
Comparative central macular thickness before surgery and at one month after uncomplicated cataract surgery in patients with diabetes mellitus without diabetic macular oedema and patients without diabetes mellitus: a prospective comparative observational study.
Association of preoperative diabetic retinopathy severity with central macular thickness change at one month after uncomplicated cataract surgery: a prospective observational analytical study in adults with diabetes mellitus and no preoperative macular oedema.
Comparative corneal endothelial cell loss at three months after uncomplicated cataract surgery in patients with diabetes mellitus and age-matched patients without diabetes mellitus: a prospective comparative observational study.
Comparative postoperative corneal oedema at one day and one week after uncomplicated cataract surgery in patients with diabetes mellitus and patients without diabetes mellitus: a prospective comparative observational study.
Association of diabetes mellitus duration with corneal endothelial cell loss at three months after uncomplicated phacoemulsification: a prospective observational analytical study in adults undergoing surgery for age-related cataract.
Association of glycaemic control with postoperative anterior chamber inflammation at one week after uncomplicated cataract surgery in adults with diabetes mellitus: a prospective observational analytical study using standardized slit-lamp grading.
Association of preoperative diabetic retinopathy with best corrected visual acuity at six weeks after uncomplicated cataract surgery: a prospective observational analytical study stratified by retinopathy severity at baseline.
Diagnostic yield of preoperative dilated fundus examination for previously undiagnosed diabetic retinopathy among patients with diabetes mellitus presenting for cataract surgery: a hospital-based cross-sectional study using retinal examination at surgical evaluation.
Association of hypertension with cataract morphology and age at surgical presentation among adults with age-related cataract: a hospital-based cross-sectional analytical study comparing patients with and without documented hypertension.
Comparative cataract morphology and presenting age in adults receiving long-term systemic corticosteroid therapy and age-matched adults without corticosteroid exposure: a comparative cross-sectional study using standardized slit-lamp grading.
Association of chronic kidney disease with cataract severity and presenting visual acuity among adults undergoing cataract evaluation: a hospital-based cross-sectional analytical study comparing patients with and without documented chronic kidney disease.
Comparative postoperative best corrected visual acuity at six weeks in patients with controlled hypertension and patients without hypertension undergoing uncomplicated cataract surgery: a prospective comparative observational study.
Association of anaemia severity with presenting cataract stage and postoperative best corrected visual acuity at six weeks among adults undergoing cataract surgery: a prospective observational analytical study using preoperative haemoglobin measurements.
Association of body mass index and metabolic comorbidities with age at cataract surgery among adults with age-related cataract: a hospital-based cross-sectional analytical study using preoperative clinical measurements and medical history.
Comparative postoperative visual recovery at one week and six weeks after uncomplicated cataract surgery in patients with multiple systemic comorbidities and patients without major systemic comorbidity: a prospective comparative observational study.
Association of diabetes mellitus with delayed presentation, mature cataract, and preoperative visual impairment among adults attending a tertiary cataract service: a hospital-based cross-sectional analytical study comparing patients with and without diabetes mellitus.
Cataract with Glaucoma, Pseudoexfoliation and Small Pupil
Comparative intraoperative complication frequency during cataract surgery in eyes with pseudoexfoliation syndrome and eyes without pseudoexfoliation syndrome: a prospective comparative observational study assessing zonular instability, posterior capsule rupture, and operative duration.
Association of pseudoexfoliation syndrome with preoperative pupil dilation and operative difficulty during cataract surgery: a prospective observational analytical study using maximum pharmacological pupil diameter and predefined intraoperative difficulty measures.
Comparative corneal endothelial cell loss at three months after uncomplicated cataract surgery in eyes with pseudoexfoliation syndrome and matched eyes without pseudoexfoliation syndrome: a prospective comparative observational study.
Association of preoperative pupil diameter with operative duration and intraoperative complication frequency during phacoemulsification for age-related cataract: a prospective observational analytical study in adults without previous ocular surgery.
Association of preoperative pupil diameter with operative duration and intraoperative complication frequency during manual small incision cataract surgery for age-related cataract: a prospective observational analytical study.
Comparative postoperative anterior chamber inflammation at one week after cataract surgery in eyes with pseudoexfoliation syndrome and eyes without pseudoexfoliation syndrome: a prospective comparative observational study using standardized slit-lamp grading.
Comparative intraocular pressure change from baseline to six weeks after uncomplicated cataract surgery in patients with primary angle closure disease and patients without glaucoma: a prospective comparative observational study.
Correlation of preoperative anterior chamber depth with intraocular pressure reduction at six weeks after uncomplicated cataract surgery in patients with primary angle closure disease: a prospective observational analytical study.
Comparative anterior chamber depth before surgery and at six weeks after uncomplicated cataract extraction in patients with primary angle closure disease: a prospective repeated-measures observational study using optical biometry.
Association of lens thickness with preoperative anterior chamber depth and intraocular pressure among patients with primary angle closure disease and visually significant cataract: a hospital-based cross-sectional analytical study using optical biometry.
Comparative best corrected visual acuity at six weeks after uncomplicated cataract surgery in patients with medically controlled primary open angle glaucoma and patients without glaucoma: a prospective comparative observational study.
Association of glaucoma severity with postoperative best corrected visual acuity at six weeks after uncomplicated cataract surgery in adults with coexisting age-related cataract: a prospective observational analytical study using preoperative automated perimetry.
Comparative intraocular pressure at one week and six weeks after uncomplicated cataract surgery in patients receiving topical glaucoma medications and patients without glaucoma: a prospective comparative observational study.
Association of preoperative intraocular pressure with magnitude of intraocular pressure change at six weeks after uncomplicated phacoemulsification in patients with coexisting cataract and glaucoma: a prospective observational analytical study.
Comparative endothelial cell density before surgery and at three months after uncomplicated cataract surgery in patients with primary angle closure disease and patients without glaucoma: a prospective comparative observational study.
Association of shallow anterior chamber depth with corneal endothelial cell loss at three months after uncomplicated phacoemulsification in patients with cataract: a prospective observational analytical study using optical biometry and specular microscopy.
Association of pseudoexfoliation-associated zonular weakness with intraoperative complication frequency during cataract surgery: a prospective observational analytical study using standardized preoperative clinical signs and operative findings.
Diagnostic accuracy of slit-lamp signs of pseudoexfoliation for predicting intraoperative zonular instability during cataract surgery, using surgeon-observed zonular laxity as the reference standard: a prospective diagnostic accuracy study.
Association of poor pharmacological pupil dilation with postoperative corneal oedema and anterior chamber inflammation at one week after cataract surgery: a prospective observational analytical study in adults with age-related cataract.
Comparative six-week visual outcome after cataract surgery in eyes requiring mechanical pupil expansion and eyes achieving adequate pharmacological dilation: a prospective comparative observational study assessing best corrected visual acuity and postoperative inflammation.
Postoperative Inflammation and Early Complications
Incidence and clinical predictors of significant postoperative corneal oedema on the first day after uncomplicated cataract surgery for age-related cataract: a prospective observational study assessing cataract density, operative duration, and preoperative endothelial cell density.
Incidence and predictors of anterior chamber inflammation at one week after uncomplicated cataract surgery: a prospective observational study assessing cataract density, operative duration, diabetes mellitus, and standardized postoperative inflammatory grading.
Association of operative duration with anterior chamber inflammation at postoperative day one and one week after uncomplicated phacoemulsification: a prospective observational analytical study in adults undergoing surgery for age-related cataract.
Association of cataract nuclear hardness with postoperative corneal oedema at day one and best corrected visual acuity at six weeks after uncomplicated phacoemulsification: a prospective observational analytical study.
Comparative early postoperative corneal oedema after phacoemulsification and manual small incision cataract surgery in patients with dense age-related cataract: a prospective comparative observational study using central corneal thickness and slit-lamp grading at one week.
Correlation of anterior chamber inflammation grade at one week with best corrected visual acuity at six weeks after uncomplicated cataract surgery: a prospective observational analytical study in adults with age-related cataract.
Association of postoperative corneal oedema at day one with delayed visual recovery at one week after uncomplicated cataract surgery: a prospective observational analytical study assessing uncorrected and best corrected visual acuity.
Comparative postoperative intraocular pressure change at day one and one week after phacoemulsification versus manual small incision cataract surgery: a prospective comparative observational study in adults with uncomplicated age-related cataract.
Association of retained cortical matter observed on first postoperative examination with anterior chamber inflammation and best corrected visual acuity at six weeks: a prospective observational analytical study after cataract surgery.
Clinical profile and six-week visual outcome of patients with posterior capsule rupture during cataract surgery compared with uncomplicated surgery: a prospective comparative observational study assessing best corrected visual acuity and early postoperative inflammation.
Association of posterior capsule rupture with postoperative corneal oedema and intraocular pressure elevation during the first week after cataract surgery: a prospective observational analytical study in adults with age-related cataract.
Clinical predictors of transient intraocular pressure elevation on the first postoperative day after uncomplicated cataract surgery: a prospective observational study assessing preoperative pressure, glaucoma status, operative duration, and cataract density.
Comparative frequency of early postoperative corneal oedema in patients with and without diabetes mellitus undergoing uncomplicated cataract surgery: a prospective comparative observational study using standardized examination on day one and week one.
Association of wound architecture on slit-lamp examination with postoperative anterior chamber reaction and uncorrected visual acuity at one week after manual small incision cataract surgery: a prospective observational analytical study.
Inter-observer agreement between ophthalmology residents and cataract surgeons for grading postoperative anterior chamber cells and flare at one week after cataract surgery: a prospective observer-agreement study using independent slit-lamp examinations.
Inter-observer agreement between ophthalmology residents and cataract surgeons for grading postoperative corneal oedema on the first day after cataract surgery: a prospective observer-agreement study using standardized slit-lamp criteria.
Association of early postoperative pain severity with anterior chamber inflammation and intraocular pressure on the first day after uncomplicated cataract surgery: a prospective observational analytical study using standardized pain scoring.
Comparative early postoperative inflammation in patients undergoing surgery for mature cataract and patients undergoing surgery for immature cataract: a prospective comparative observational study using standardized anterior chamber grading at one day and one week.
Association of preoperative ocular surface bacterial culture positivity with clinically evident postoperative conjunctival inflammation during the first week after uncomplicated cataract surgery: a prospective observational analytical study using routine microbiological methods.
Predictors of unscheduled hospital review within the first month after cataract surgery, assessing pain, redness, visual complaints, systemic disease, operative factors, and postoperative complications: a prospective observational study.
Paediatric, Traumatic and Complicated Cataract
Clinical and aetiological profile of paediatric cataract among children presenting to a tertiary teaching hospital, and association of age at presentation with baseline visual impairment: a retrospective record-based observational study.
Association of delay from parental recognition to specialist presentation with cataract density and presenting visual acuity among children with developmental or congenital cataract: a hospital-based cross-sectional analytical study.
Clinical profile and three-month visual outcome of children undergoing cataract surgery for unilateral traumatic cataract: a prospective observational study assessing age, injury mechanism, presenting visual acuity, and postoperative best corrected visual acuity.
Comparative three-month visual outcome of traumatic cataract caused by penetrating ocular injury and blunt ocular injury in children and young adults: a prospective comparative observational study using best corrected visual acuity.
Association of time from ocular trauma to cataract surgery with three-month best corrected visual acuity among patients with traumatic cataract and no retinal injury: a prospective observational analytical study.
Clinical predictors of poor three-month visual outcome after traumatic cataract surgery, assessing age, presenting visual acuity, corneal scar, lens damage, and associated anterior segment injury: a prospective observational analytical study.
Association of corneal scar location with best corrected visual acuity at three months after traumatic cataract surgery in patients without posterior segment injury: a prospective observational analytical study.
Comparative postoperative inflammation at one week after surgery for traumatic cataract and age-related cataract in adults: a prospective comparative observational study using standardized anterior chamber cell and flare grading.
Clinical profile and visual outcome at three months after cataract surgery in patients with healed anterior uveitis and visually significant complicated cataract: a prospective observational study using best corrected visual acuity and inflammatory grading.
Association of preoperative quiescent interval with postoperative anterior chamber inflammation at one week among patients undergoing cataract surgery for uveitic cataract: a prospective observational analytical study.
Comparative corneal endothelial cell loss at three months after cataract surgery in eyes with healed uveitis and eyes with uncomplicated age-related cataract: a prospective comparative observational study.
Association of posterior synechiae extent with operative duration and intraoperative difficulty during cataract surgery in patients with uveitic cataract: a prospective observational analytical study using standardized preoperative slit-lamp assessment.
Clinical profile and six-week visual outcome after cataract surgery in patients with previous treated ocular trauma but no active inflammation or posterior segment pathology: a prospective observational study.
Association of traumatic cataract morphology with intraoperative posterior capsule defect among patients undergoing cataract surgery after penetrating or blunt ocular injury: a prospective observational analytical study using operative findings as the outcome.
Diagnostic accuracy of preoperative B-scan ultrasonography for detecting posterior segment pathology in eyes with dense cataract obscuring fundus visualization, using postoperative dilated fundus examination as the reference standard: a prospective diagnostic accuracy study.
Diagnostic yield of preoperative B-scan ultrasonography for clinically significant posterior segment abnormalities in patients with mature or hypermature cataract and absent fundus view: a prospective cross-sectional study.
Association of B-scan ultrasonography-detected posterior segment abnormalities with best corrected visual acuity at six weeks after cataract surgery in eyes with preoperative media opacity: a prospective observational analytical study.
Clinical profile of cataract among patients with previous ocular inflammation and association of cataract morphology with presenting visual acuity: a hospital-based cross-sectional analytical study using standardized slit-lamp assessment.
Association of age at presentation with amblyopia severity among children with unilateral developmental cataract awaiting surgical management: a hospital-based cross-sectional analytical study using age-appropriate best corrected visual acuity assessment.
Comparative referral delay and visual impairment among children with congenital or developmental cataract referred from primary care versus those directly presenting to a tertiary hospital: a comparative cross-sectional analytical study.
Cataract Service Delivery, Follow-up and Patient-Reported Outcomes
Association of distance from hospital with delayed presentation and mature cataract among adults seeking cataract surgery at a tertiary teaching hospital: a hospital-based cross-sectional analytical study using symptom duration and cataract stage as outcomes.
Association of socioeconomic status with presenting visual acuity and cataract maturity among adults attending a government tertiary care cataract service: a hospital-based cross-sectional analytical study using standardized socioeconomic and clinical assessment.
Association of referral source with cataract severity and presenting best corrected visual acuity among adults attending a tertiary teaching hospital: a hospital-based cross-sectional analytical study comparing community referral, primary care referral, and self-presentation.
Predictors of failure to attend the scheduled one-week postoperative visit after cataract surgery, assessing travel distance, socioeconomic factors, counselling, visual improvement, and comorbidity: a prospective observational study.
Predictors of failure to attend the scheduled six-week postoperative refractive assessment after uncomplicated cataract surgery: a prospective observational study assessing demographic, socioeconomic, travel, counselling, and early postoperative visual factors.
Association of preoperative counselling comprehension with adherence to postoperative medication and follow-up during six weeks after cataract surgery: a prospective observational analytical study using a structured counselling comprehension assessment.
Comparative postoperative medication adherence during the first month after cataract surgery among patients counselled with verbal instructions alone and patients receiving routine verbal plus pictorial instructions: a prospective comparative observational study.
Association of health literacy with correct postoperative eye drop administration technique at one week after cataract surgery: a prospective observational analytical study using structured observation of administration technique.
Prevalence and predictors of incorrect postoperative eye drop instillation among adults one week after cataract surgery: a prospective cross-sectional analytical study assessing age, literacy, hand function, caregiver support, and prior instruction.
Correlation of uncorrected visual acuity improvement with National Eye Institute Visual Function Questionnaire score change at six weeks after uncomplicated cataract surgery: a prospective observational analytical study using preoperative and postoperative assessments.
Comparative improvement in patient-reported visual function at six weeks after first-eye cataract surgery among patients with unilateral visually significant cataract and bilateral visually significant cataract: a prospective comparative observational study.
Association of postoperative spectacle provision with patient-reported visual function at three months after uncomplicated cataract surgery: a prospective observational analytical study comparing patients who obtained prescribed spectacles and those who did not.
Predictors of spectacle non-purchase within three months after postoperative refraction following cataract surgery, assessing cost, travel, perceived need, uncorrected vision, and socioeconomic status: a prospective observational study.
Association of waiting time from surgical advice to cataract surgery with presenting visual function deterioration and patient-reported difficulty in daily activities: a prospective observational analytical study among adults awaiting surgery.
Comparative presentation delay, cataract severity, and baseline visual disability among rural and urban adults undergoing cataract surgery at a tertiary government hospital: a comparative cross-sectional analytical study.
Association of family support with timely postoperative follow-up and correct medication use during the first six weeks after cataract surgery among elderly adults: a prospective observational analytical study.
Association of postoperative visual improvement at one week with subsequent six-week follow-up attendance among adults undergoing uncomplicated cataract surgery: a prospective observational analytical study.
Comparative patient satisfaction at six weeks after uncomplicated phacoemulsification and manual small incision cataract surgery in a government teaching hospital: a prospective comparative observational study using a validated cataract surgery satisfaction questionnaire.
Association of preoperative expectations with patient satisfaction at six weeks after uncomplicated cataract surgery, adjusting for postoperative best corrected visual acuity and refractive outcome: a prospective observational analytical study.
Predictors of poor patient-reported visual function despite good best corrected visual acuity at three months after uncomplicated cataract surgery, assessing residual astigmatism, dry eye parameters, systemic disease, and fellow-eye status: a prospective observational analytical study.
Not the ophthalmology subspeciality you need? Cataract is one section of our full ophthalmology collection — the hub page lists every subspeciality, each with its own free topic list. Updated September 2026.
📌 Updated for 2026–2027 MS Ophthalmology Cataract admissions
The topic mix was reviewed for feasibility across routine cataract clinics, preoperative work-up, operating lists and standard postoperative follow-up.
Many projects can be completed with slit-lamp examination, visual acuity, refraction, keratometry, tonometry and routine optical or ultrasound biometry; selected questions additionally use specular microscopy, pachymetry, OCT or B-scan ultrasonography where these are already available.
Most topics do not require experimental surgery, new devices or research-only investigations; the strongest designs usually define one primary outcome and use a fixed postoperative assessment point.
Publication potential is strongest where the protocol addresses refractive prediction error, surgically induced astigmatism, corneal endothelial safety, diabetes, pseudoexfoliation, small pupil, complicated cataract or patient-reported outcomes with clearly prespecified measurements.
Generate a protocol from any topic above
Select Generate Protocol → beside any title in the list above and receive a submission-ready document built around that topic, containing all eighteen components:
Introduction / Synopsis
Research Question
Aim of the Study
Primary Objective
Secondary Objectives
Materials and Methods
Inclusion Criteria
Exclusion Criteria
Sample Size Calculation
Methodology
Statistical Analysis
Ethical Considerations
Review of Literature
References
Gantt Chart / Study Timeline
Patient Information Sheet
Consent Form
Data Collection Form
Already have your thesis title?
Generate the full cataract protocol directly — objectives, methodology, sample size, statistics, timeline, references and annexures.
Alongside cataract protocols and synopses, support is also available for departmental presentations, journal club presentations, ethics committee presentations, and posters and oral presentations for medical conferences — for postgraduate residents, board trainees and research scholars across India and the GCC. Prepared by a practising doctor with long experience in medical publishing and thesis supervision.
The topics above work as research questions anywhere — what changes is the document the institution expects, and who approves it before data collection begins. The Gulf equivalent of an Indian synopsis is the cataract research proposal submitted to an institutional review board, and it ordinarily carries three sections an Indian synopsis does not: a Gantt chart, a budget and resources section, and a Declaration of Helsinki statement.
Board and residency programmes — country by country
Saudi Arabia — SCFHS and the Saudi Board. Residency and fellowship training under the Saudi Commission for Health Specialties includes a research project with a set timeline, and the cataract research proposal is the document prepared at the outset and cleared by the institutional review board before recruitment starts.
United Arab Emirates — DHA, DOH Abu Dhabi and MOHAP. Residents training in Dubai, Abu Dhabi and the northern emirates prepare a cataract research protocol for their programme and submit it for institutional review board approval before any data are collected.
Qatar — DHP (formerly QCHP) and Hamad Medical Corporation. A cataract IRB proposal is reviewed before recruitment, with the ethics section written to the institution's own template rather than a generic one.
Bahrain — NHRA. Trainees turning cataract research topics into a project need the proposal cleared by their institutional research and ethics committee before fieldwork begins.
Oman — OMSB. Residency programmes under the Oman Medical Specialty Board include a research component, and the cataract research proposal is the document assessed at the start of it.
Kuwait — KIMS. A cataract study protocol goes to the institutional committee for approval before the project begins.
Arab Board programmes across the region. The Arab Board carries its own research requirement irrespective of the host country, and the cataract proposal follows the same structure throughout.
Postgraduate degrees — Malaysia, the Gulf and beyond
Malaysia — MMed, the National Medical Research Register and MREC. A cataract dissertation proposal for a Master of Medicine programme carried out in a Ministry of Health facility must be registered on the NMRR and approved by the Medical Research and Ethics Committee before the study begins, and the guidance asks for submission four to six months ahead of data collection. Every investigator on the study team registers on the NMRR as well, so the methodology, ethics and team sections are written in far more detail than an Indian synopsis requires.
PhD and Master's candidates elsewhere. University programmes generally require a full cataract research proposal of roughly 6,000 to 10,000 words, with an extended literature review, a theoretical framework and a detailed methodology chapter.
PhD and MMed proposals are written individually by a medical doctor and revised until the supervisor accepts them. They are not produced by the automated protocol generator.
Current cataract research is increasingly moving from simple visual-acuity comparisons towards measurement quality, prediction error and patient-centred outcomes.
Biometry and refractive prediction: optical biometry, keratometry repeatability and absolute postoperative prediction error are useful because small preoperative measurement differences can produce clinically meaningful refractive surprises.
Ocular surface effects on cataract measurements: tear-film instability and dry eye are important because unstable keratometry can affect intraocular lens power calculation and postoperative refractive accuracy.
Endothelial safety and surgical stress: endothelial cell loss, corneal thickness and early oedema allow phaco energy, cataract density, anterior chamber depth and systemic disease to be studied using measurable postoperative outcomes.
Complex cataract and real-world outcomes: pseudoexfoliation, glaucoma, small pupil, diabetes, traumatic cataract, adherence and follow-up are valuable because they reflect routine teaching-hospital case mix rather than ideal uncomplicated surgery alone.
Protocol and synopsis guidance
What a Cataract protocol must contain
Define the eye-level question first. A cataract protocol should state whether the unit of analysis is the patient, one study eye per patient, or both eyes. If both eyes are included, the protocol must explain how correlation between fellow eyes will be handled rather than counting them as fully independent observations.
Fix the measurement method and time point. Visual acuity format, refraction method, keratometer or biometer, cataract grading system, specular microscopy method, pachymetry method and postoperative visit should be prespecified. Refractive studies should distinguish signed prediction error from absolute prediction error, while surgically induced astigmatism should be analysed as a vector rather than by simple subtraction of cylinder magnitudes.
Define the operative exposure. Phacoemulsification, manual small incision cataract surgery, incision location, surgeon grade, pupil-expansion device, phaco energy, operative duration and intraoperative complications should be recorded only when they are relevant to the primary objective. Mixing procedures without prespecified stratification can make the final analysis uninterpretable.
Cataract synopsis versus Cataract protocol
The synopsis is the compressed academic version. It usually states the background, rationale, objectives, design, setting, participants, major measurements and analysis in a concise form suitable for departmental or university submission.
The protocol is the operational document. For cataract work it should go further by defining which eye is analysed, the exact biometry and refraction methods, cataract grading, surgical technique, postoperative time points, handling of bilateral cases, criteria for excluding complicated surgery, and how missing follow-up will be managed.
Do not leave measurement decisions until data collection starts. A synopsis can say that refractive outcome will be assessed, but the protocol should specify whether the outcome is spherical equivalent, cylinder, signed prediction error, absolute prediction error or a prespecified visual-acuity endpoint.
Sample size and statistical analysis
Base the sample size on the primary outcome. Agreement studies need assumptions about expected limits of agreement or reliability, comparative studies need an expected between-group difference, incidence studies need an anticipated proportion, and diagnostic-accuracy studies need assumptions about sensitivity, specificity and disease prevalence.
Match the test to the data structure. Preoperative and postoperative measurements from the same eye are paired. Measurements from two unrelated surgical groups are independent. Repeated postoperative visits require repeated-measures methods when all time points are analysed together.
Account for two-eye data. Both eyes from the same patient are correlated. Either select one eye using a prespecified rule or use an analysis that accounts for within-patient clustering. Simply doubling the number of eyes while applying tests that assume independence can produce confidence intervals and p-values that are too optimistic.
1. How do I choose a feasible Cataract thesis topic for 2026-2027?
Choose a question that matches the cataract volume, equipment and follow-up pattern of the department. A single clearly measurable primary outcome is usually better than a broad title containing many unrelated endpoints. Topics based on routine biometry, refraction, slit-lamp findings, operative records and scheduled postoperative visits are generally easier to complete than studies requiring uncommon devices or long follow-up.
2. Which study designs are accepted for a Cataract thesis?
Commonly workable designs include prospective or retrospective observational studies, comparative cohort studies, cross-sectional analytical studies, agreement and reliability studies, diagnostic-accuracy studies, repeated-measures studies and service-delivery studies. The design should follow the objective rather than being chosen only because it is familiar.
3. What should I settle with my guide before registering a Cataract topic?
Settle the primary outcome, study eye rule, surgical group definitions, required instruments, postoperative time point, minimum follow-up, exclusion of complicated cases, expected sample availability and the exact variables that will be taken from routine records. For surgical comparisons, clarify whether surgeon experience and cataract density will be measured because both can confound the result.
4. How should postoperative refractive outcome be measured in a Cataract study?
Use a prespecified postoperative refraction time after the early postoperative state has stabilised. State whether the main outcome is spherical equivalent, refractive cylinder, uncorrected or best corrected visual acuity, signed prediction error or absolute prediction error. Do not treat signed and absolute errors as interchangeable, because a positive and a negative error can cancel when averaged even though both represent inaccurate prediction.
5. What is the difference between a Cataract synopsis and a Cataract protocol?
The synopsis is the concise submission document describing why the study is being done and how it will broadly be conducted. The protocol should contain the operational details needed to reproduce the work, including eye selection, measurement methods, grading systems, surgical exposure, follow-up schedule, primary endpoint, statistical plan and management of bilateral-eye data.
6. What ethical issues should I address in a Cataract thesis?
Prospective work should use informed consent, while paediatric cataract studies require guardian consent and child assent from about seven years when developmentally appropriate. Record-based studies may seek an ethics-approved waiver of consent where permitted. The study should state that no additional radiation, contrast, invasive procedure or research-only venepuncture will be added unless scientifically necessary; if blood sampling is specifically required, the protocol should state the volume limit and justification. Separate consent should be obtained for identifiable anterior-segment photographs or video. Clinically important incidental findings such as glaucoma, diabetic retinopathy, corneal endothelial compromise or posterior-segment pathology detected during B-scan assessment should have a named route for documentation, counselling and referral.
7. Can I include both eyes of the same patient in a Cataract thesis?
Yes, but the two eyes are not statistically independent. The protocol should either select one study eye using a rule decided before analysis or use statistical methods that account for clustering within patients. Treating two eyes from one person as though they came from two unrelated participants can artificially increase the effective sample size and make p-values appear more significant than they are.
8. Can a Cataract topic be used for a PhD proposal or Gulf board research project?
Yes, but the scope changes. An MS Ophthalmology synopsis is usually designed around one achievable dissertation question, while a PhD proposal generally needs a broader research programme, stronger novelty and a more developed methodological framework. Cataract questions can also be adapted to the mandatory research project requirements used by SCFHS and the Saudi Board, the Arab Board of Health Specializations, and DHP, DHA, DOH and MOHAP-linked training programmes, provided the local board format, ethics process and supervisory requirements are followed.
9. When should I register my Cataract thesis topic?
Register after confirming that the department sees enough eligible cataract patients, the required measurements are routinely available, the guide agrees with the primary objective and the planned postoperative visit is realistic. Registration should occur early enough to allow ethics approval, pilot testing of the data sheet and prospective enrolment without compressing follow-up near the submission deadline.
Found a topic that fits your department?
Generate its full protocol — objectives, methodology, sample size, statistics, timeline, references and annexures — in editable format.
