CATARACT SURGERY AND PROGRESSION OF DIABETIC RETINOPATHY
Patient with diabetes mellitus have a higher prevalence of lens opacity 1and cataractdevelopment at an earlier age than non diabetic.2Cataract in diabetes mellitus decreasesthe visual acuity, makes posterior segment evaluation and laser treatment difficult.Several studies have shown that there is progression of diabetic retinopathy after cataractsurgery. In all studies, criteria for progression of diabetic retinopathy are:a) progression of any form/type or stage of diabetic eye (DE), nonproliferative diabeticretinopathy (NPDR) or proliferative diabetic retinopathy (PDR) to any advanced,recurrent form/ type or stage of NPDR or PDR andb) development of new clinically significant macular edema (CSME) and/or worsening/recurrent of preexisting CSME defined by Early Treatment Diabetic RetinopathyStudy (ETDRS).• More severe the preexisting diabetic retinopathy (DR), much worse the DR aftercataract extraction. The progression of DR after cataract extraction is severe inIntracapsular Cataract Extraction (ICCE) than Extracapsular Cataract Extraction(ECCE) with Intraocular Lens (IOL) and Sutureless Small Incision CataractSurgery (SICS) and Phacoemulcification.• Progression of DR increases with complicated cataract surgery, like posteriorcapsular rupture (PCR), vitreous loss and prolonged surgery.• The first 6 months period is crucial as a minimum period of follow up to detectprogression of DR.• There are other several local and systemic risk factors for the progression of DR,like hypertension, renal failure, ischemic heart disease, high cholesterol andtriglyceride level, pregnancy etc.Key Words: Diabetic retinopathy, cataract surgery, risk factors