中国组织工程研究

中国组织工程研究 ›› 2010, Vol. 14 ›› Issue (13): 2395-2398.doi: 10.3969/j.issn.1673-8225.2010.13.029

• 数字化骨科 digital orthopedics • 上一篇    下一篇

软性角膜接触镜矫正近视低阶像差后高阶像差的变化

李  莹1，汤  欣2，李丽华2   

  1. 1天津医科大学眼科临床学院，天津市 300070；2天津市眼科医院，天津市 300070
  • 出版日期:2010-03-26 发布日期:2010-03-26
  • 通讯作者: 汤 欣，博士，教授，主任医师，天津市眼科医院，天津市 300070
  • 作者简介:李 莹★，女， 1984年生，山西省和顺县人，汉族，2010年天津医科大学毕业，硕士，主要从事白内障及视光学研究。 lyinglee0307@live.cn

Changes in high order aberrations following myopia correction with monofocal soft contact lens

Li Ying1, Tang Xin2, Li Li-hua2   

  1. 1 Clinical College of Ophthalmology, Tianjin Medical University, Tianjin   300070, China; 2 Tianjin Eye Hospital, Tianjin   300070, China
  • Online:2010-03-26 Published:2010-03-26
  • Contact: Tang Xin, Doctor, Professor, Chief physician, Tianjin Eye Hospital, Tianjin 300070, China
  • About author:Li Ying★, Master, Clinical College of Ophthalmology, Tianjin Medical University, Tianjin 300070, China lyinglee0307@live.cn

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692

被引次数

7

摘要：

背景：低阶像差矫正之后，高阶像差成为影响视觉质量的主要方面。作为一种屈光不正的矫治方法，角膜接触镜矫正了低阶像差，而高阶像差随之的变化值得观察探讨。
目的: 分析佩戴软性角膜接触镜矫正青年单纯近视眼低阶离焦像差对高阶像差的影响。
方法: 使用依据Hartmann-Shack原理设计的COAS波前像差仪对47只单纯性近视眼分别测量角膜接触镜矫正低阶离焦像差前后的高阶像差，提取瞳孔直径为6 mm时高阶像差的均方根值进行分析。比较矫正低阶离焦像差前后3阶至6阶各项高阶像差以及屈光度的变化值、二阶离焦像差的变化值与球差C40Zenike系数变化值的关系。
结果与结论: 矫正后较矫正前，垂直慧差C3-1正向变化趋势(t =3.843，P=0.000)；球差C40负向变化趋势(t=–8.319，P=0.000)；3阶到6阶总高阶像差均方根值增加(t =2.125，P=0.039)，球差C40的变化量与屈光度变化值呈正相关(r=0.536，P=0.000)。结果提示矫正低阶像差影响高阶像差改变。佩戴软性角膜接触镜后眼总高阶像差增加，矫正低阶近视离焦像差后球差C40减小。

关键词: 近视, 高阶像差, 软性角膜接触镜, 屈光, 矫正

Abstract:

BACKGROUND: High order aberrations (HOA) are a key factor that influences vision quality following low order aberrations rectification. As a rectification of ametropia, corneal contact lens corrects low order aberrations, but the changes in HOA require exploration.
OBJECTIVE: To evaluate the influence of hydrogel soft contact lenses (SCL) for correction of myopia on HOA. 
METHODS: Monochromatic aberrations of the whole eye were measured with a COAS Shack-Hartmann wavefront analyzer before and after wearing SCL for myopia correction with a natural pupil. The fitted Zernike coefficients were calculated for each eye including 47 myopic eyes with fixed optical zones of 6.0 mm. Each order aberrations and total high order aberrations from 3rd to 6th before and after correcting the lower order aberrations in myopia were compared, and the relationship of changes in refraction, C20 and C40 was analyzed respectively.
RESULTS AND CONCLUSION: SCL yielded larger high order aberrations (t =2.125, P=0.039) including more coma (t =3.843, P=0.000) and less spherical aberration (t =–8.319, P=0.000). The change in spherical aberration was highly positively correlated with the changes in negative power of the contact lens (r=0.536, P=0.000). Correcting myopia defocus affects HOA. SCL for myopia induced a significant increase in total HOA. The spherical aberration of myopia subject changes statistically with sphere trial SCL.

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