屈光矫正对近视者眼-足反应时间的作用

目的 研究屈光矫正与非矫正状态下近视眼眼-足反应时间的差异。方法 使用运动视觉测试仪（Wayne Saccadic Fixator）对31名近视受试者进行测试，其中男性17名，女性14名，平均年龄为（25.8±1.9）岁。根据屈光状态将受试者分为三组：低度近视组（-0.50~-3.00 D）9人，中度近视组（-3.25~-6.00 D）12人，高度近视组（-6.25~-9.00 D）10人。在屈光矫正和非矫正两种状态下，分别测量受试者的眼-足反应时间、视觉反应时间和动作反应时间，重复测量5次，取平均值。采用配对t检验对测试结果进行统计学分析。结果 在屈光矫正与非矫正两种状态下，低、中、高度屈光组的眼-足反应时间之间差异均无统计学意义（t分别为-1.61、-1.16、-0.15，P〉0.05）。三个屈光度组的视觉反应时间和动作反应时间的差异均无统计学意义（P〉0.05）。在矫正与非矫正两种状态下，优势足与非优势足的眼-足反应时间、视觉反应时间、动作反应时间的差异也无统计学意义（P〉0.05）。结论 在对形觉要求不高的情况下，屈光矫正与否对近视眼的眼-足反应时间、视觉反应时间、动作反应时间均无显著影响。

The study of the effect of myopia correction on eye-foot reaction time

Objective To study the difference of eye-foot reaction time between full-corrected and uncorrected myopes. Methods Thirty-one subjects were tested by Wayne Saccadic Fixator, including 17 males and 14 females. The average age was 25.8±1.9 years old. The subjects were divided into 3 groups based on refractive status： low myopia （-0.50~-3.00 D, 9 subjects）, moderate myopia（-3.25~-6.00 D, 12 subjects） and high myopia （-6.25~-9.00 D, 10 subjects）. The eye-foot reaction time, visual reaction time and motor response time of subjects were tested in both full-corrected and uncorrected refractive conditions. The mean value of each parameter was derived from five measurements and was analyzed by paired samples t test. Results There were no significant differences of measurements of low myopes, moderate myopes and high myopes between full-corrected and uncorrected refractive condition（t=-1.61, P=0.15; t=-1.16, P=0.27; t=-0.15, P=0.88）. Similarly, there were no significant differences of visual reaction time among the three groups （t=-1.82, P=0.11; t=-0.62, P=0.55; t=-0.42, P=0.68）. There were no significant differences of motor response time of low myopes, moderate myopes and high myopes between corrected and uncorrected refractive condition （t=-1.08, P=0.31; t=-1.95, P=0.08; t=-0.44, P=0.67）. There were no significant differences of eye-foot reaction time, visual reaction time and motor response time between groups using dominant foot and non-dominant foot （P〉0.05）. With uncorrected refractive error, there were also no significant differences of these measurements between the two groups （P〉0.05）. Conclusion Refractive correction don＇t affect the eye-foot reaction time of myopes when the low visual demands condition.