RESUMEN
To determine the frequency of subclinical hypothyroidism in patients with proliferative diabetic retinopathy. Cross Sectional Study. This study was conducted in Dow University Hospital, Dow University of Health Sciences, Karachi from 1[st] January 2012 to 31[st] December 2012. One hundred and nineteen patients attending the medicalOPD Dow University of Health Sciences were included in study. 119 patients were enrolled in study .47.1% were male and 52.9% were female patients mean age was 55.75 +/- 7.85 years, Mean HbA1[c] value was 8.02 +/- 1.46%, Subclinical hypothyroidism was identified in 26.9% the patients. Subclinical hypothyroidism is associated with the development of proliferative diabetic retinopathy in the patients suffering from type 2 diabetics