正常和低视力人黄斑光阈值的对比研究

The Comparative Study of the Macular Light Threshold in the Normal and Low Visual Acuity People

目的:测定正常和低视力人的黄斑光阈值,探讨其黄斑光敏感度的变化。方法:应用Humphrey视野分析仪,选用黄斑阈值检查程序,测定93只正常视力眼和76只低视力眼黄斑区视野的光阈值。结果:1.黄斑的光阈值随着年龄的增长呈升高的趋势,光敏感度与年龄呈负相关变化;2.在同年龄组,低视力人的黄斑光阈值显著高于正常视力人的黄斑光阈值;3.在同年龄组,正常和低视力人视野的四个象限黄斑光阈值无显著性差异;4.男女性黄斑光阈值无显著性差异。结论:正常视力人黄斑光敏感度显著优于低视力人的黄斑光敏感度;黄斑光敏感度随着年龄的增长而降低。眼科学报 1996;12:1O3—106。

Purpose:To test the macular light threshold (MLT) and the change of macular light sensitivity (MLS) in the normal and low visual acuity people. Methods:MLT of 93 eyes of the normal and 76 eyes of low visual acuity people was measured with macular threshold test of Humphrey Field Analyzer -640. Results:1. MLT increases with age,there is a negative correlation between MLS and age;2. MLT of low visual acuity people is significantly higher than that of the normal visual acuity people in the same age group;3. No significant difference of MLT was found in the four quadrants of visual field in the same age group;4. No significant difference of MLT was found between male and female. Conclusions:MLS of the normal visual acuity people is superior to that of the low visual acuity people;MLS decreases with age. Eye Science 1996; 12: 103-106.