Dietze Holger H, Cox Michael J
Department of Optometry, University of Bradford, Richmond Road, Bradford, BD7 1DP UK.
J Opt Soc Am A Opt Image Sci Vis. 2004 Apr;21(4):473-85. doi: 10.1364/josaa.21.000473.
Following aberroscopy, aspheric front surface soft contact lenses (SCLs) were custom-made to correct spherical refractive error and ocular spherical aberration (SA) of 18 myopic and five hypermetropic subjects (age, 20.5 +/- 5 yr). On-eye residual aberrations, logMAR visual acuity, and contrast sensitivity were compared with the best-correcting spectacle lens, an equally powered standard SCL, and an SCL designed to be aberration free in air. Custom-made and spherical SCLs reduced SA (p < 0.001; p < 0.05) but did not change total root-mean-square (rms) wave-front aberration (WFA). Aberration-free SCLs increased SA (p < 0.05), coma (p < 0.05), and total rms WFA. Visual acuity remained unchanged with any of the SCL types compared with the spectacle lens correction. Contrast sensitivity at 6 cycles/degree improved with the custom-made SCLs (p < 0.05). Increased coma with aspheric lens designs and uncorrected astigmatism limit the small possible visual benefit from correcting ocular SA with SCLs.
在进行像差检查后，为18名近视和5名远视受试者（年龄20.5±5岁）定制了非球面前表面软性接触镜（SCL），以矫正球面屈光不正和眼球面像差（SA）。将眼上残余像差、logMAR视力和对比敏感度与最佳矫正眼镜片、等度数标准SCL以及设计为在空气中无像差的SCL进行比较。定制的和球面SCL降低了SA（p<0.001；p<0.05），但未改变总均方根（rms）波前像差（WFA）。无像差SCL增加了SA（p<0.05）、彗差（p<0.05）和总rms WFA。与眼镜片矫正相比，任何类型的SCL视力均保持不变。定制的SCL使6周/度的对比敏感度提高（p<0.05）。非球面镜片设计导致的彗差增加和未矫正的散光限制了用SCL矫正眼SA可能带来的微小视觉益处。
