This study is to prove that Entelon tab. 50mg is superior in clinical efficacy and safety compared to placebo for 24 months in patients suffering from non-proliferative diabetic retinopathy.
This clinical trial is a multi-center, double-blind, randomized, placebo controlled , parallel design, superiority, phase 4 study to evaluate the efficacy and safety of Entelon 50mg in 396 patients with non-proliferative diabetic retinopathy.