Faaland R W, Grossman L W
Center for Devices and Radiological Health, Food and Drug Administration, Rockville, Maryland 20857.
J Cataract Refract Surg. 1992 May;18(3):286-92. doi: 10.1016/s0886-3350(13)80906-6.
A model eye water cell was used to evaluate the optical performance of biconvex, meniscus, and plano-convex (spheric and aspheric) monofocal poly(methyl methacrylate) intraocular lenses when the lenses were centered and when they were decentered 1 mm and 2 mm. Resolution, induced astigmatism, and modulation transfer function measurements were performed for all lenses with the more convex surface of the lens oriented toward the incident light. The same measurements were performed for the plano-convex and meniscus lenses in the reverse orientation. The lens shapes least affected by decentration were the biconvex and spheric plano-convex with the convex surface oriented toward the incident light. When centered, the aspheric plano-convex lenses had the best overall contrast performance based on the modulation transfer function measurements. However, once decentered the performance of the aspheric lenses approached that of the meniscus lenses in the reverse orientation, the lens shape which had the worst performance.
使用模型眼水室评估双凸、弯月形和平凸（球面和非球面）单焦点聚甲基丙烯酸甲酯人工晶状体在居中以及偏心1毫米和2毫米时的光学性能。对于所有镜片，当镜片的更凸面朝向入射光时，进行分辨率、诱导散光和调制传递函数测量。对于弯月形镜片和平凸镜片，以相反方向进行相同的测量。受偏心影响最小的镜片形状是双凸和凸面朝向入射光的球面平凸镜片。居中时，基于调制传递函数测量，非球面平凸镜片具有最佳的整体对比度性能。然而，一旦偏心，非球面镜片的性能接近弯月形镜片在相反方向的性能，而弯月形镜片的性能是最差的。
