Introduction: Cataract is one of the most common causes of avoidable blindness accounting for 51% of the world__ampersandsignrsquo;s total blind ness. Diabetes mellitus is a metabolic disorder that causes several complications such as a cataract. Cataract tends to develop at an earlier age in diabetics, and progression of cataract is much more rapid in diabetics. Objective: To assess cases of cataract between diabetic and non-diabetic patients based on factors such as age, sex, type of cataract, HbA1C, duration and treatment for diabetes, and other associated comorbidities. Methods: 35 patients of two groups, diabetic and non-diabetic admitted for cataract surgery in Saveetha Medical College and Hospital were analyzed. Detailed ophthalmic evaluation on visual acuity, slit-lamp examination and fundus examination was done and associated comorbidities were noted in each group. Results: The prevalence of cataract was higher in age-group 40-60 years among diabetic patients, largely in diabetic females; and higher in the age-group 60-80 years among non-diabetics. In Diabetic cases, the Posterior subcapsular cataract(50%) was the common type of cataract, while among Non-diabetics, the nuclear cataract(56.66%) was the most common. 58.82% of all diabetics were hypertensives. Conclusion: The research proves that prevalence of cataract occurs commonly at a younger age in diabetics compared to the non-diabetics with female diabetics more prone to cataract formation. Good glycemic control and early detection of cataract help to retard the progression of cataract and thus prevent blindness due to cataract.