Ans. is 'c' i.e., Macular edema o The DCCT demonstrated that improvement of glvcemia controly Reduced nonproliferative and proliferative retinopathy (47% reduction).y Microalbuminuria (39% reduction).y Clinical nephropathy (54% reduction).y Neuropathy (60% reduction).y Improved glycemic control also slowed the progression of early diabetic complication.y There vras a nonsignificant trend in reduction of macrovascular events during the trial.o The UKPDS demonstrated that each percentage point reduction in AIC was associated with a 35% reduction in microvascular complications.