多焦角膜接触镜矫正老视视觉质量评估  

Visual performance of subjects wearing multifocal contact lenses

作　　者：毛欣杰[1] 王武[1] 陈岩[1] 郑斌[1] 

机构地区：[1]温州医学院附属眼视光医院,325027

出　　处：《浙江医学》2011年第3期325-327,共3页Zhejiang Medical Journal

基　　金：基金项目：温州市科技局课题（Y20100121）

摘　　要：目的 探讨配戴多焦角膜接触镜矫正老视视远和视近视觉质量的效果.方法 18例老视患者分别配戴框架眼镜和多焦角膜接触镜后,测量亮环境下不同对比度（100%、25%和5%）视远和视近的LogMar对数视力,并在亮环境下测量对比敏感度,比较两种矫正方法对视觉质量的改善情况.结果 亮环境下,对比度为100%时,框架眼镜配戴后的视远视力和多焦角膜接触镜配戴后的视力无明显差异（P ＞0.05）;而对比度为25%和10%时,多焦角膜接触镜配戴后视远视力均显著低于框架眼镜配戴后视力（P＜0.01）.多焦角膜接触镜配戴后视近视力均明显低于框架眼镜配戴后视力（P＜0.05）.在低频（1.5周/度）情况下,框架眼镜和多焦角膜接触镜配戴后对比敏感度值无明显差异（P ＞0.05）;而在其他空间频率（3、6、12、18周/度）下,框架眼镜配戴后的对比敏感度值均明显高于多焦角膜接触镜配戴后的对比敏感度值（P＜0.05）.结论 多焦角膜接触镜在高对比度和亮环境下有很好的视远和视近视觉质量,而在低对比度下视觉质量有所下降.Objective To investigate visual quality with the multifocal contact lens wearing and spectacle wearing. Methods 100%,25% and 5% contrast LogMar visual acuity （VA） was measured at light environment in 18 cases of presbyopia wearing spectacle and multifocus contact lens. Contrast sensitivity function （CSF） was measured in light environment with the multifocal contact lens wearing and spectacle wearing. Results There was no significant different in distance VA between two wearing methods in 100% contrast LogMar visual acuity under light environment （P〉 0.05）. And in 25% and 10% contrast, LogMar visual acuity with multifocal contact lens wearing was lower than that with spectacle wearing （P 〈 0.01 ）. For near distance 100%,25% and 5% contrast LogMar visual acuity with multifocal contact lens wearing was lower than that with spectacle wearing （P 〈 0.05 ）. In 1.5 cycle/degree, there was no difference in contrast sensitivity between multifocal contact lens wearing and spectacle wearing （P〉 0.05 ）, while in other spatial frequency of 3, 6, 12 and 18 cycles/degree, contrast sensitivity values with single-focal contact lens wearing were higher than that with multifocal contact lens wearing （P〈 0.05）.Conclusion Wearing multifocal contact lens has good visual quality for distance in high contrast, but in low-contrast the visual quality is declined.

关 键 词：多焦点角膜接触镜 视觉质量 对比度 

分 类 号：R778.3[医药卫生—眼科]