Retinal toxicity was examined by ophthalmoscopy, photopic electroretinography (ERG) ,light and transmission electron microscope on the 28th day after injection.

• 每组家兔眼玻璃体内注射以上制剂后每周观察眼前后节变化，28天行视网膜电图检查，并做光镜、电镜检查，综合分析各组药物对视网膜的毒性作用。