Cargando…
Psychophysical Measurements of Luminance Contrast Sensitivity and Color Discrimination with Transparent and Blue-Light Filter Intraocular Lenses
INTRODUCTION: The purpose of this study was to measure luminance contrast sensitivity and color vision thresholdfs in normal subjects using a blue light filter lens and transparent intraocular lens material. METHODS: Monocular luminance grating contrast sensitivity was measured with Psycho for Windo...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Healthcare
2017
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5693818/ https://www.ncbi.nlm.nih.gov/pubmed/28795358 http://dx.doi.org/10.1007/s40123-017-0101-y |
_version_ | 1783279990860677120 |
---|---|
author | da Costa, Marcelo Fernandes Júnior, Augusto Paranhos Lottenberg, Claudio Luiz Castro, Leonardo Cunha Ventura, Dora Fix |
author_facet | da Costa, Marcelo Fernandes Júnior, Augusto Paranhos Lottenberg, Claudio Luiz Castro, Leonardo Cunha Ventura, Dora Fix |
author_sort | da Costa, Marcelo Fernandes |
collection | PubMed |
description | INTRODUCTION: The purpose of this study was to measure luminance contrast sensitivity and color vision thresholdfs in normal subjects using a blue light filter lens and transparent intraocular lens material. METHODS: Monocular luminance grating contrast sensitivity was measured with Psycho for Windows (version 2.36; Cambridge Research Systems) at 3.0, 6.0, 12.0, 20.0, and 30.0 cycles per degree of visual angle (cpd) in 15 normal subjects (eight female), with a mean age of 21.6 years (SD = 3.8 years). Chromatic discrimination was assessed with the Cambridge colour test (CCT) along the protan, deutan, and tritan color confusion axes. Both tests were performed in a darkened room under two situations: with a transparent lens and with blue light filter lens. Subjective impressions were taken by subjects regarding their visual experience under both conditions. RESULTS: No difference was found between the luminance contrast sensitivity measured with transparent and blue light filter. However, 13/15 (87%) of the subjects reported more comfortable vision with the blue filter. In the color vision test, tritan thresholds were significantly higher for the blue filter compared with the transparent filter (p = 0.003). For protan and deutan thresholds no differences were found. CONCLUSION: Blue-yellow color vision is impaired with the blue light filter, and no impairment occurs with the transparent filter. No significant differences in thresholds were found in the luminance contrast sensitivity comparing the blue light and transparent filters. The impact of short wavelength light filtering on intrinsically photosensitive retinal ganglion cells is also discussed. |
format | Online Article Text |
id | pubmed-5693818 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Springer Healthcare |
record_format | MEDLINE/PubMed |
spelling | pubmed-56938182017-11-29 Psychophysical Measurements of Luminance Contrast Sensitivity and Color Discrimination with Transparent and Blue-Light Filter Intraocular Lenses da Costa, Marcelo Fernandes Júnior, Augusto Paranhos Lottenberg, Claudio Luiz Castro, Leonardo Cunha Ventura, Dora Fix Ophthalmol Ther Original Research INTRODUCTION: The purpose of this study was to measure luminance contrast sensitivity and color vision thresholdfs in normal subjects using a blue light filter lens and transparent intraocular lens material. METHODS: Monocular luminance grating contrast sensitivity was measured with Psycho for Windows (version 2.36; Cambridge Research Systems) at 3.0, 6.0, 12.0, 20.0, and 30.0 cycles per degree of visual angle (cpd) in 15 normal subjects (eight female), with a mean age of 21.6 years (SD = 3.8 years). Chromatic discrimination was assessed with the Cambridge colour test (CCT) along the protan, deutan, and tritan color confusion axes. Both tests were performed in a darkened room under two situations: with a transparent lens and with blue light filter lens. Subjective impressions were taken by subjects regarding their visual experience under both conditions. RESULTS: No difference was found between the luminance contrast sensitivity measured with transparent and blue light filter. However, 13/15 (87%) of the subjects reported more comfortable vision with the blue filter. In the color vision test, tritan thresholds were significantly higher for the blue filter compared with the transparent filter (p = 0.003). For protan and deutan thresholds no differences were found. CONCLUSION: Blue-yellow color vision is impaired with the blue light filter, and no impairment occurs with the transparent filter. No significant differences in thresholds were found in the luminance contrast sensitivity comparing the blue light and transparent filters. The impact of short wavelength light filtering on intrinsically photosensitive retinal ganglion cells is also discussed. Springer Healthcare 2017-08-09 2017-12 /pmc/articles/PMC5693818/ /pubmed/28795358 http://dx.doi.org/10.1007/s40123-017-0101-y Text en © The Author(s) 2017 https://creativecommons.org/licenses/by-nc/4.0/This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/ (https://creativecommons.org/licenses/by-nc/4.0/) ), which permits any noncommercial use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
spellingShingle | Original Research da Costa, Marcelo Fernandes Júnior, Augusto Paranhos Lottenberg, Claudio Luiz Castro, Leonardo Cunha Ventura, Dora Fix Psychophysical Measurements of Luminance Contrast Sensitivity and Color Discrimination with Transparent and Blue-Light Filter Intraocular Lenses |
title | Psychophysical Measurements of Luminance Contrast Sensitivity and Color Discrimination with Transparent and Blue-Light Filter Intraocular Lenses |
title_full | Psychophysical Measurements of Luminance Contrast Sensitivity and Color Discrimination with Transparent and Blue-Light Filter Intraocular Lenses |
title_fullStr | Psychophysical Measurements of Luminance Contrast Sensitivity and Color Discrimination with Transparent and Blue-Light Filter Intraocular Lenses |
title_full_unstemmed | Psychophysical Measurements of Luminance Contrast Sensitivity and Color Discrimination with Transparent and Blue-Light Filter Intraocular Lenses |
title_short | Psychophysical Measurements of Luminance Contrast Sensitivity and Color Discrimination with Transparent and Blue-Light Filter Intraocular Lenses |
title_sort | psychophysical measurements of luminance contrast sensitivity and color discrimination with transparent and blue-light filter intraocular lenses |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5693818/ https://www.ncbi.nlm.nih.gov/pubmed/28795358 http://dx.doi.org/10.1007/s40123-017-0101-y |
work_keys_str_mv | AT dacostamarcelofernandes psychophysicalmeasurementsofluminancecontrastsensitivityandcolordiscriminationwithtransparentandbluelightfilterintraocularlenses AT junioraugustoparanhos psychophysicalmeasurementsofluminancecontrastsensitivityandcolordiscriminationwithtransparentandbluelightfilterintraocularlenses AT lottenbergclaudioluiz psychophysicalmeasurementsofluminancecontrastsensitivityandcolordiscriminationwithtransparentandbluelightfilterintraocularlenses AT castroleonardocunha psychophysicalmeasurementsofluminancecontrastsensitivityandcolordiscriminationwithtransparentandbluelightfilterintraocularlenses AT venturadorafix psychophysicalmeasurementsofluminancecontrastsensitivityandcolordiscriminationwithtransparentandbluelightfilterintraocularlenses |