IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-7-51066 Original Research Paper Correlation Of Duration Of Diabetes Mellitus And Glycosylated Haemoglobin (Hba1c) Levels With Diabetic Retinopathy Deepti Mujumdar Dr. Dr. Parth Rai Dr. July 2023 12 7 01 02