2, 3, 4, 5, 6 Aberration is the phenomenon by which an image becomes distorted when the lens cannot completely concentrate incoming rays of light into a single focus. The modification of IOL asphericity has been a key focus of IOL development, as adjusting the asphericity of the IOL to corneal spherical aberration (SA) can result in a decrease of total aberration. Developing interest about the impact of cataract surgery on visual acuity, function, and quality of life has led to the acceleration of the development and refinement of the intraocular lens (IOL). Measuring internal SA with iTrace yields relatively accurate results in all types of IOLs with adequate pupil sizes.Ĭataract surgery involves the extraction of an opaque lens, which leads to improved visual performance. The internal SA of group 1 had a positive value. There were no demographic statistically significant differences among the groups. We compared the internal SAs of these IOLs in pupil sizes of 3, 4, 5, and 6 mm. Total, corneal, and internal SA were measured using iTrace at a 6-mm pupil size in 27 eyes of 27 patients implanted with a monofocal spherical IOL (group 1: Natural, SN60AT), 30 eyes of 30 patients implanted with a monofocal aspheric IOL (group 2: IQ, SN60WF), and 30 eyes of 30 patients implanted with a multifocal aspheric IOL (group 3: ReSTOR, SN6AD1) at 3 months after cataract surgery. To demonstrate the results of the ray tracing-type aberrometer in measuring spherical aberration (SA) in pseudophakic eyes with monofocal intraocular lens (IOL), aspheric monofocal IOL, or aspheric diffractive multifocal IOL.
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