Methods Seventeen choroidal neovascular membranes were obtained f rom AMD patients with pars plana vitrectomy and subretinal membranes peeling wer e investigated. The expression of MMP-2 and MMP-9 were determined with immunoh istochemical technique.

• 方法 实验组标本取自AMD患者经扁平部玻璃体切割术和视网膜下膜取出术获得的脉络膜新生血管膜 17例 ,免疫组织化学法检测MMP 2和MMP 9的表达。