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Evaluation of quality of vision with diffractive aspheric multifocal intraocular lenses implantation after phacoemulsification

Thesis

Last updated: 06 Feb 2023

Subjects

-

Tags

Ophthalmology

Advisors

El-Gendi, Fadya M. , Yasin, Hazem M. , Habib, Ahmad E.

Authors

Saleh, Malak Adli Muhammad

Accessioned

2017-07-12 06:40:27

Available

2017-07-12 06:40:27

type

M.D. Thesis

Abstract

Multifocal IOL implantation whether refractive or hybrid diffractive-refractive adds another option for cataract surgeons. The optical zones of a zonal refractive lens direct light to either the distance or near focus and each zone act as an independent lens. Diffractive lenses divide incoming light into multiple wavefronts using small steps on the optic surface which can be designed to produce 2 sharp focal points by wavefront interference but unlike the refractive lenses they create two lens powers and thus two images. Hybrid lenses combine both the refractive and diffractive technology. ReSTOR and ReZoom multifocal IOLs provide excellent visual performance. Although contrast sensitivity is reduced compared to monofocal IOLs, patients with multifocal IOLs have the privilege of spectacle independence after cataract surgery.

Issued

1 Jan 2012

DOI

http://dx.doi.org/10.21473/iknito-space/35466

Details

Type

Thesis

Created At

28 Jan 2023