黄斑转位手术前中心凹最小转位距离和角度的设计

目的 探讨黄斑转位手术前中心凹最小转位距离和角度的设计及其应用。 方法 对具有典型性中心凹下脉络膜新生血管膜（SCNV）的渗出型老年性黄斑变性患者42例42只眼和高度近视黄斑变性患者11例11只眼进行荧光素和吲哚青绿眼底血管造影，分析研究黄斑部SCNV的实际面积、中心凹的最小转位距离和角度。 结果 黄斑部SCNV的实际面积0.39~18.00 mm²，平均（3.08±3.22）mm²。设计最小向上转位距离67~2240 μm，平均（845.72±425.23）μm；最小向下转位距离53~2430 μm，平均（912.17±547.77）μm。设计最小向上转位角度1~ 32°，平均（13.23±6.68）° ；最小向下转位角度1~35°，平均（14.06±8.46）°。设计最小向上和向下转位距离差值在500 μm以上者16只眼，占30.19%；设计最小向上和向下转位角度差值在10°以 上者11只眼，占20.75%。 结论 黄斑转位手术前对中心凹最小转位距离和角度进行设计有助于手术方案的选择。 （中华眼底病杂志，2004，20：75-77）

Preoperative design of the minimum foveolar translocation distance and angle of macular translocation

Objective To investigate the preoperative design and application of the minimum foveolar translocation distance and angle of macular translocation. Methods The fundus fluorescein and indocyanine green an giographies were performed on 53 eyes of 53 patients with classic subfoveal choroidal neovascularization （SCNV）, including 42 with exudative age-related macular degeneration and 11 with high myopic macular degeneration. The actual area of macular SCNV and the minimum foveolar translocation distance and angle were analyzed. Results The actual area of SCNV was 0.39~18.00 mm² with the mean of (3.08±3.22) mm². The designed minimum superior translocation distance was 67~2 240μm with the mean of (845.72±425.23) μm；the minimum designed minimum inferior translocation distance was 53~2 430 μm with the mean of (912.17±547.77) μm. The minimum designed superior translocation angle was 1~32°with the mean of (13.23±6.6 8)°；the minimum designed inferior translocation angle was 1~35°with the mean of (14.06±8.46)°. The individual difference of the minimum designed superior and inferior translocation distance was more than 500 μm in 16 eyes （30.19 % ）, and the difference of translocation angle was more than 10°in 11（20.75%）. Conclusion Preoperative design of minimum translocation distance and angle of macular translocation may be helpful to choose the operation program. (Chin J Ocul Fundus Dis，2004，20：75-77)