Review Article
Extended Depth-of-Field Intraocular Lenses: An Update

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Abstract

Extended depth-of-focus (EDOF) is a new intraocular lens (IOL) technology in the treatment of presbyopia. In contrast to multifocal (MF) IOLs, EDOF lenses create a single elongated focal point, rather than several foci, to enhance depth of focus. In this way, EDOF IOLs aim to reduce photic phenomena, glare, and halos, which have been reported in MF IOLs. A potential disadvantage is a decrease of retinal image quality if the amount of the aberrations is excessively increased. Frequently, EDOF IOLs are combined with MF optical designs; for this reason, EDOF IOLs are commonly a subject of confusion with optical multifocality concepts. The aim of this article is to clarify what an EDOF IOL is and to discuss the recently reported outcomes with these IOLs. We propose naming lenses that have combined optical designs as “hybrid IOLs.”

Keywords

extended depth-of-focus
hybrid lenses
intraocular lenses
presbyopia
retinal quality image

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Financial support This study has been supported in part by the Red Temática de Investigación Cooperativa en Salud (RETICS), reference number RD16/0008/0012, financed by the Instituto Carlos III – General Subdirection of Networks and Cooperative Investigation Centers (R&D&I National Plan 2008–2011) and the European Regional Development Fund (Fondo Europeo de Desarrollo Regional FEDER)

Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned.

There authors have no conflicts of interest to disclose.