翼状胬肉角膜表面屈光状态分析

摘要

目的 了解不同大小的翼状胬肉的角膜表面屈光状况方法 对我科80只眼大小不同的翼状胬肉进行裂隙灯显微镜记录翼状胬肉横径(胬肉角膜缘与其顶端距离)、竖径(跨过角巩膜缘时的弧长)及面积(横径X竖径/2),同时应用角膜地形图分析,记录simK(最徒径与最平径,散光值及轴向)、角膜中心屈光度、平均屈光度、以胬肉尖部为中心的扁平区内的最小屈光波(P-屈光波)、角膜散光并将上述数据进行统计分析.结果 70只眼单侧翼状胬肉长度和面积与散光呈正相关.10只眼双侧(鼻侧及颞侧长度<4 mm)均生长胬肉的患者胬肉长度和面积与散光无相关性.但总屈光力较正常屈光力下降.结论 翼状胬肉对角膜屈光有明显的影响,角膜地形图对此有很好的评估作用.%Objective To study the corneal refractive changes in pterygium . Methods Pterygia length, width and area was measured by slit-lamp microscope in 80 eyes with primary pterygium. Central corneal power, mean corneal power, the flattest meridional power , the astigmatism of the pterygium, and SIK including (the biggest meridional power , the flattest meridional power and the refractive location ) were recorded. Pterygium-associated flattening was also recorded as the refractive power and its location. Results The length and size of those had a positive correlation with corneal refrac -tion in 70 eyes with one side pterygium. There was no relation between the length and size of corneal refraction in 10 eyes with two sides pterygium (length <4 mm) , while the corneal refraction decreased. Conclusion Pterygium can change the corneal refraction and corneal topography is an satisfactory method to evaluate these changes .