The latencies and average response densities of 6 ring retinal regions pre- and 3,7 days and 3 months post PDT were determined and compared.

• 应用美国VERISscienceTM4 0视诱发反应图象系统 ,在PDT治疗前及治疗后 3d、 7d及 3m ,对各患眼 6个环状视网膜区域的N1、P1波潜伏期和平均反应密度进行检测并比较。