<prompt> Cataract in diabetic patients is because of the accumulation of sorbitol in the lens. The enzyme responsible for this isHexokinaseNADPH dependant aldolase reductaseGlucokinasePhosphofructo isomerase  <response>: NADPH dependent aldolase reductase reduces excessive glucose to sorbitol and intracellular accumulation of sorbitol causes osmotic changes resulting in cataract development. 