摘要
目的观察角膜塑形术控制近视发展的临床效果。方法106例患者(212眼),平均等效球镜度(-3.85±1.43)D,按照角膜塑形术的验配程序给予配戴角膜塑形镜,采取过夜配戴形式,平均配戴3年后停戴角膜塑形镜1个月,测量屈光度、角膜曲率的变化,并与本院同样条件的渐进镜、框架镜屈光度、角膜曲率变化结果进行对比分析,评价角膜塑形术控制近视进展的作用。结果戴镜3年后停戴1个月时,等效球镜度为(-4.34±1.43)D,等效屈光度增幅(0.49±0.68)D,平均每年增幅0.15D,与戴镜前比较差异有统计学意义(t=9.75,P<0.01)。戴镜3年后停戴1个月,平均角膜曲率为(43.30±1.42)D,较配戴前扁平(0.09±0.34)D,但两者比较差异无统计学意义(t=1.95,P>0.05)。结论配戴角膜塑形镜后每年近视加深约0.15D,角膜塑形术在一定程度上可控制近视加深,但其具体作用机制尚需进一步研究。
Objective To evaluate the effect of orthokeratology in controlling the development of myopia in adolescents. Methods One hundred and six adolescents with myopia were included in this study. The average age was （15.02±3.89）years. The average spherical equivalent refraction was （-3.85±1.43）D. The average corneal curvature was （43.39±1.44）D. The patients were fitted with overnight orthokeratology lenses according to the standard procedure. Regular aftercare visits were made during the following three years. Patients were then required to discontinue wearing orthokeratology lenses for one month after the three-year period. The changes in refraction and corneal curvature were measured. Results One month after patients discontinued wearing orthokeratology lenses, the average spherical equivalent refraction was （-4.34±1.43）D. The spherical equivalent refraction increased （-0.49±0.68）D over the three years （t test, t=9.75, P〈0.01）. There was a 0.15 D increase in myopia every year. The average corneal curvature was （43.30±1.42）D. There was no significant difference in corneal curvature compared to measurements taken prior to wearing orthokeratology lenses （t test, t=1.95, P〉0.05）. Conclusion The increase in myopia was about 0.15 D every year. Orthokeratology can control the development of myopia in adolescents. The active mechanisms should be studied further.
出处
《眼视光学杂志》
2008年第4期288-290,294,共4页
Chinese Journal of Optometry & Ophthalmology
基金
广东省自然科学基金资助项目(7301441)
关键词
角膜塑形术
近视
屈光度
角膜曲率
orthokeratology
myopia
refraction
corneal curvature
