Objective To investigate the improvement effects of sericin on the retinal oxidative stress and micro-inflammatory state in diabetic rats. Methods A diabetic rat model was established by using high-fat and high-sugar diet and intraperitoneal injection of streptozotocin.Then 24 diabetic rats were randomly divided into sericin treatment group and diabetic model group,with 12 rats for each group,and additional 12 normal rats with the same age were collected as a normal control group. Next,the rats in the seric...