Intraocular Lens Refractive Index and Its Impact on External Surface Reflections.

Détails

ID Serval
serval:BIB_ED525CDF01DE
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Intraocular Lens Refractive Index and Its Impact on External Surface Reflections.
Périodique
Journal of refractive surgery
Auteur⸱e⸱s
Kymionis G.D., Kim J., Petrelli M., Grentzelos M.A., Hashemi K., Wagnières G.
ISSN
1081-597X (Print)
ISSN-L
1081-597X
Statut éditorial
Publié
Date de publication
06/2021
Peer-reviewed
Oui
Volume
37
Numéro
6
Pages
398-402
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
To determine and compare the origin of the external surface reflections produced by commonly used intraocular lenses (IOLs).
The specular reflection taking place at the anterior surface of eight types of IOLs (IOL power = 22.00 diopters [D]) with different refractive indices (RIs), optical design, and ultraviolet and blue light-filtering function were measured. The experimental set-up included a laser beam light source (3.5 mW, 532 nm) and a saline-filled model eye containing the IOL to be examined. External surface reflections were measured using a power meter, and the IOL surface reflectance (%) was compared among the eight IOLs investigated.
External reflections from the anterior surface of the studied implants increased as the RI of the IOL material increased. The IOL models composed of high RI material (RI = 1.56 ± 0.02) were found to have a more than threefold higher external surface reflections compared to those with low RI (RI = 1.45 ± 0.02). Ultraviolet or blue light-filtering functions showed no significant correlation with the external reflectance.
IOLs with a high RI are associated with external surface reflections that are more than threefold higher than those with lower RI. The "cat's eye" phenomenon seen in pseudophakic eyes by an outside observer strongly depends on the RI, but is independent of the filter incorporated in the IOL. [J Refract Surg. 2021;37(6):398-402.].
Pubmed
Web of science
Création de la notice
23/07/2021 19:19
Dernière modification de la notice
11/03/2022 6:33
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