Diabetics. Diabetes mellitus is an important ocular risk factor. Diabetes has been found to be associated with elevated intraocular pressure (IOP), particularly primary open angle glaucoma (POAG). IOP has been associated with different systemic, familial, anthropometric and demographic factors by several studies Several studies have reported factors including age, sex, African ancestry, blood pressure, BMI, alcohol, smoking, myopia and family history of glaucoma to be positively associated with elevated IOP in general. Diabetes mellitus is an important risk factor associated with the occurrence of retinopathy, certain types of cataract, and glaucoma during its course. Hence based on above findings the present study was planned for Comparative Evaluation of Intraocular Pressure in Diabetic and Non-Diabetic Patients Admitted in Patna Medical College & Hospital, Patna, Bihar. The present study was planned in Department of Ophthalmology Patna Medical College& Hospital, Patna, Bihar, India. The study was conducted from July 2018 to Oct 2018. Total 40 cases of the diabetic and non-diabetic patients were enrolled in the present study. The 20 cases of the diabetes were enrolled in Group A and the remaining 20 cases of the normal, non-diabetic patients were enrolled in the Group B. IOP was measured in both eyes using Schiotz tonometer and recorded after putting lignocaine drops in both eyes and recorded after 5 minutes. IOP measurements were always performed between 9: 00 am-12: 00 pm by Schiotz tonometry to minimize the diurnal variation. Blood glucose was estimated using Glucometer. The data generated from the present study concludes that mean intra ocular pressure was higher in diabetic group as compared to non-diabetic group. Mean intra ocular pressure was higher in uncontrolled diabetic patients (HbA1c >6.5) when compared with controlled diabetic patients (HbA1c < 6.5). In diabetics IOP should be monitored regularly so as to prevent complications.