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Review
. 2020 May-Jun;9(3):194-202.
doi: 10.1097/APO.0000000000000296.

Extended Depth-of-Field Intraocular Lenses: An Update

Piotr Kanclerz  1 , Francesca Toto  2 , Andrzej Grzybowski  3   4 , Jorge L Alio  2
Affiliations
Review

Extended Depth-of-Field Intraocular Lenses: An Update

Piotr Kanclerz et al. Asia Pac J Ophthalmol (Phila). 2020 May-Jun.

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."

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Conflict of interest statement

There authors have no conflicts of interest to disclose.

Figures

FIGURE 1
FIGURE 1
Spherical (A) vs chromatic (B) aberrations.
FIGURE 2
FIGURE 2
Spherical aberration-based EDOF IOLs: (A) Sifi Mini Well Ready, (B) medicem wichterle intraocular lens-continuous focus, (C) Tecnis Eyhance ICB00. EDOF IOLs indicates extended depth-of-focus intraocular lenses.
FIGURE 3
FIGURE 3
EDOF IOLs utilizing the pinhole effect. (A) Acufocus IC-8, (B) XtraFocus Pinhole Implant. EDOF IOLs indicates extended depth-of-focus intraocular lenses.
FIGURE 4
FIGURE 4
Hybrid MF Diffractive/EDOF IOLs: Tecnis Symfony. EDOF IOLs indicates extended depth-of-focus intraocular lenses; MF, multifocal.
FIGURE 5
FIGURE 5
Hybrid MF refractive/EDOF IOLs: (A) Lentis Mplus X, (B) Acunex Vario AN6 V, (C) Swiss Advanced Vision Lucidis. EDOF IOLs indicates extended depth-of-focus intraocular lenses; MF, multifocal.
FIGURE 6
FIGURE 6
Hybrid MF Refractive-Diffractive/EDOF IOLs: (A) Swiss Advanced Vision Eden, (B) Swiss Advanced Vision Harmonis, (C) Tecnis Synergy: ZFR00. EDOF IOLs indicates extended depth-of-focus intraocular lenses; MF, multifocal.
See this image and copyright information in PMC

References

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