Eye Model for Inspecting the Image Quality of IOLs

摘要

Purpose:To inspect and compare the image quality of an aspheric intraocular lens(IQ,Alcon)with those of conventional monofocal silicone and acrylic intraocular lens and multifocal intraocular lens(Array).Methods:The IOLs were tested in the eye model,which was designed to be optically equivalent to the theoretical eye model.The eye model is a combination of a spherical photographic lens with 35 mm focal length(IOL put in a water cell)and a charge coupled device(CCD)camera.The images constructed by the lenses are observed on a monitor of personal computer and the contrasts of the images are analyzed by using commercial image processing software.SHARP value is used to measure and estimate image definition.Results:The images constructed by changing the diameter of aperture stop and IOL.Observed by this eye model,the image definition of aspheric intraocular lens(IQ,Alcon)is better than others.Discussion:The proposed eye model is useful for testing functional vision and for inspecting the differences of intraocular lens.