国产改良负压吸引环在LASIK中的应用

Use of modified suction ring in LASIK

目的 评价国产改良负压吸引环在特殊眼球患者中应用效果。方法 选择经常规负压吸引环不少于 3次吸引未成功的眼球 ,改用国产改良负压吸引环进行手术 ,并分析这些眼球结构特点。结果 患者共 9例 15眼 ,采用改良负压吸引环均 1次吸引固定成功 ,顺利完成角膜瓣的制作。其中 5例 8眼角膜屈光度较小 ,平均角膜屈光度 <42 .7D,周边角膜最小屈光度值尤其小 ,其中 7眼 <41D;1例角膜直径偏小 ,为 9.5 m m,手术中整个负压环吸引固定的部位均位于巩膜上 ;3例 6眼为睑裂偏小患者。结论 国产改良负压吸引环对于较平的角膜、角膜直径偏小以及睑裂偏小等特殊患者是一种安全有效的负压吸引固定环。

Objective To evaluate the effect of modified suction ring in laser in situ keratomileusis(LASIK) for special eyeballs.Methods Those eyeballs that couldn't be sucked successfully with regular suction ring were performed with modified suction ring, and the characteristic of those eyes was analyzed.Results Fifteen eyes of 9 cases were included in this study and were sucked successfully with modified suction ring with intact corneal flap.Eight eyes of 5 cases had small corneal power especially in the peripheral section. The corneal power in the peripheral section of 7 eyes was less than 41D. Corneal diameter of 1 eye was 9.5mm and 6 eyes of 3 cases had small palpebral fissure.Conclusions The modified suction ring is safe and effective for those eyes with flat cornea, small corneal diameter and small palpebral fissure.