Objective: To study the changes in oscillatory potentials (OPs) of electroretinogram (ERG) and pattern electroretinogram (P-ERG) in early diabetic retinopathy (DR), and so as to diagnose early DR in time.

• 研究早期糖尿病视网膜病变 (diabeticretinopathy,DR)的视网膜电图震荡电位 (Oscillatory potentials,OPs)和图形视网膜电图 (Pattern electroretinogram,P- ERG)的变化特点 ,借以早期诊断 DR。