摘要
目的对偏高角膜屈光力与正常角膜屈光力伴近视眼的临床对比分析，探讨对准分子激光角膜屈光手术方式的选择及手术安全性的意义。方法采用计算机辅助角膜地形冈测量。偏高组：偏高角膜屈光力伴近视眼，Simk1≥46D，34例（65眼）。其中男15例（28眼），女19例（37眼）。正常组：正常角膜屈光力伴近视眼，Simk1〈46D，34例（68眼）。其中男15例（30眼），女19例（38眼）。对两组资料的屈光度及角膜曲率、角膜地形图、角膜厚度、角膜散光、眼压进行统计学处理。结果偏高组角膜曲率（Simk1）为46．86～48．99D，平均（46．86±0．61）D；正常组角膜曲率（Simk1）为41．35～45．75D，平均（43．61±1．17）D。两组的年龄无统计学差异（P〉0．05），偏高组中女性角膜曲率大于男性（P〈0．01），正常组中男性与女性角膜曲率无统计学差异（P〉0．05）。两组的Simk2、Mink、角膜厚度均为正态分布（P〉0．01）。偏高组的Simk1,Simk2、Mink均高于正常组（P〈0．01），偏高组与正常组的角膜厚度、眼压值的差异有统计学意义（P〈0．01），偏高组与正常组的Simk1、Simk2、Mink、角膜散光、SRI差异均有统计学意义（P〈0．01），但两组的屈光度、SAI差异无统计学意义（P〉0．05）。结论偏高组的角膜厚度及跟压值均低于正常组，但偏高组Simk1、Simk2、Mink均高于正常组，且其角膜散光及SRI值大于正常组。
Objective To study high and normal corneal refractive power comparatively accompanied with myopia, and discuss the surgery selection and safety of eximer corneal refractive surgery. Methods 65 eyes of 34 cases （male 15 cases, 28 eyes; female 19 cases, 37 eyes） which high corneal refractive power was more than or equal to 46D, 68 eyes of 34 cases （male 15 cases, 30 eyes; female 19 cases, 38 eyes） which normal corneal refractive power was less than 46D with no keratoconus were measured by topography. The corneal topography, the corneal curvature, the dioptre （ D）, corneal astigmism, central corneal thickness （CCT） and intraocular pressure （IOP） was analyzed statistically in two groups. Results The mean corneal curvature（ Simk 1 ） was （46.86 -48.99） D in high group and （41.35 -45.75）D in normal one. The age was no significant different between the two groups （ P 〉 0.05 ）. The corneal power of female patients was higher than that of male one in high group （P 〈0.01 ）, but it was no significant different in normal group （ P 〉 0.05 ）. There was significant difference between high group and normal group in CCT, IOP, maximum meridian （ Simk 1 ）, the vertical meridian （ Simk 2 ） , the minimum meridian （Mink） and the difference between simkl and simk2 （Ak）, the surface regularity index （SRI） （P 〈 0.01 ）. There was on significantdifference between high group and normal group in the dioptre（D） , and surface asymmetty index （SAI） （P 〉 0. 05 ）. Conclusion The CCT and lOP in high cornea refractive power eases are less than the normal value. But the Simk 1, Simk 2, Mink, △k, SR] are more than that in the normal group.
出处
《眼外伤职业眼病杂志》
2009年第9期667-669,共3页
Journal of Injuries and Occupational Diseases of the Eye with Ophthalmic Surgeries
关键词
角膜屈光力
近视眼
角膜地形图
corneal refractive power
myopia
corneal topography
