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Purpose : To measure the contrast sensitivity in adults with type 2 diabetes mellitus without retinopathy and to compare it with age matched controls and also to correlate the contrast sensitivity in these patients with the duration of diabetes and glycemic control. Methods: This cross sectional study included 100 diabetic patients and 100 controls. Detailed history, ocular examination, measurement of contrast sensitivity and glycosylated hemoglobin values were measured. Statistical analysis was done using Spearman’s coefficient of correlation Results: Diabetic patients were found to have reduced contrast sensitivity as compared to healthy controls. Also it was found that contrast sensitivity decreased as the duration of diabetes increased and glycemic controls worsened. Conclusion: Contrast sensitivity could be a useful clinical tool in assessing retinal function in diabetic patients even before any retinopathy changes become visible.

Contrast Sensitivity in Diabetic Patients without Retinopathy And It’s Correlation with the Duration of Diabetes And Glycemic Control