马蹄形裂孔与增殖性玻璃体视网膜病变

HORSESHOE TEARS AND PROLIFERATIVE VITREORETINOPATHY

裂孔性视网膜脱离术后发生严重PVR的危险眼只限于马蹄形裂孔的这些眼,为了阐明马蹄形裂孔发生PVR的机制及其两者关系.本文分析了单纯马蹄形裂孔性视网膜脱离手术失败的101眼,病例分为PVR组和无PVR组,两组病例对照比较.结果表明:玻璃体液化和后脱离是马蹄形裂孔发生PVR的基本原因.玻璃体出血、葡萄膜炎、脉络膜脱离、多次手术是PVR发生的促进因素,而裂孔后缘卷边固定与前瓣比其下暴露的色素上皮区小是PVR己发生的临床证据.因此当临床上出现玻璃体出血、葡萄膜炎、脉络膜脱离及第一次手术没成功时要警惕术后发生严重的PVR.

Eyes at the risk of developing severe PVR postoperatively are limited to those affected with retinal detachment associated with horseshoe tears. This study is conducted to determine the relationship of horseshoe tears and PVR. 101 failure cases following surgery of retinal detachment with simple horseshoe tears were reviewed. The PVR group was compared with the group without PVR . The results indicate that vitreous gel liquefaction and posterior vitreous detachment are essential reasons of retinal detachment with horseshoe tears. Vitreous hemorrhage, uveitis,choroidal detachment and multiple operations are predisposing factors. It is the clinical evidence developed PVR that horseshoe tears with a curled and fixed posterior edge or the anterior flaps are smaller in size than the area of the exposed pigment epithelial cells.