Visual Performance of a New Extended Depth-of-Focus Intraocular Lens Compared to a Distance-Dominant Diffractive Multifocal Intraocular Lens

Surgeons can choose among several multifocal intraocular lenses (IOLs) to correct presbyopia at the time of cataract removal or refractive lens exchange. Most multifocal IOLs act as bifocal IOLs (ie, they form two primary focal points providing functional distance and near vision). The near add usually ranges between +3.00 and +4.00 diopters (D) at the IOL plane and in the average eye enables a near focal distance between 36 and 48 cm.1 Several studies employing a defocus curve to assess eyes with bifocal IOLs found reduced visual function at intermediate distances, especially with the
Source: Journal of Refractive Surgery - Category: Opthalmology Authors: Source Type: research