Contact lenses for color vision deficiency
File(s)
Published version
Author(s)
Elsherif, Mohamed
Salih, Ahmed E
Yetisen, Ali K
Butt, Haider
Type
Journal Article
Abstract
Color blindness or color vision deficiency (CVD) affects around 4.5% of the population in Europe. There have been several attempts to assist color-blind individuals using color filter glasses. Here, contact lenses are developed to assist individuals suffering from color blindness. Two dyes (Atto 488 and 565) that provide the desired absorption wavelength ranges are selected to be immobilized in soft contact lenses. The chosen dyes have absorption bands in wavelength ranges of 480–500 and 550–580 nm. Both dyes are individually immobilized in contact lenses, and over 95% of the light in the undesired ranges are blocked. The dyes do not diffuse out from lenses in artificial tears and contact lens storage solution. Performances of the developed contact lenses are compared to commercial color-blind glasses. The contact lenses are tested in color vision deficient patients using Ishihara test. Participants indicate enhancement in the visibility of the colors and their contrast in a color rich environment. The proposed contact lenses show enhanced results as compared to commercial color-blind glasses in indoors and achieved similar outcomes outdoors.
Date Issued
2020-11-30
Date Acceptance
2020-11-30
Citation
Advanced Materials Technologies, 2020, 6 (1)
ISSN
2365-709X
Publisher
Wiley
Journal / Book Title
Advanced Materials Technologies
Volume
6
Issue
1
Copyright Statement
© 2020 The Authors. Published by Wiley-VCH GmbH
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
License URL
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (EPSRC)
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000594052600001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
EP/T013567/1
EP/T013567/1
Subjects
Science & Technology
Technology
Materials Science, Multidisciplinary
Materials Science
Atto dyes
biomaterials
color blindness
contact lenses
vision correction
Publication Status
Published
Article Number
ARTN 2000797
Date Publish Online
2020-11-30