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Visual and non‐visual properties of filters manipulating short‐wavelength light
PURPOSE: Optical filters and tints manipulating short‐wavelength light (sometimes called ‘blue‐blocking’ or ‘blue‐attenuating’ filters) are used in the management of a range of ocular, retinal, neurological and psychiatric disorders. In many cases, the only available quantification of the optical ef...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6887545/ https://www.ncbi.nlm.nih.gov/pubmed/31696535 http://dx.doi.org/10.1111/opo.12648 |
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author | Spitschan, Manuel Lazar, Rafael Cajochen, Christian |
author_facet | Spitschan, Manuel Lazar, Rafael Cajochen, Christian |
author_sort | Spitschan, Manuel |
collection | PubMed |
description | PURPOSE: Optical filters and tints manipulating short‐wavelength light (sometimes called ‘blue‐blocking’ or ‘blue‐attenuating’ filters) are used in the management of a range of ocular, retinal, neurological and psychiatric disorders. In many cases, the only available quantification of the optical effects of a given optical filter is the spectral transmittance, which specifies the amount of light transmitted as a function of wavelength. METHODS: We propose a novel physiologically relevant and retinally referenced framework for quantifying the visual and non‐visual effects of these filters, incorporating the attenuation of luminance (luminous transmittance), the attenuation of melanopsin activation (melanopsin transmittance), the colour shift, and the reduction of the colour gamut (gamut reduction). Using these criteria, we examined a novel database of spectral transmittance functions of optical filters (n = 121) which were digitally extracted from a variety of sources. RESULTS: We find a large diversity in the alteration of visual and non‐visual properties. The spectral transmittance properties of the examined filters vary widely, in terms of shapes and cut‐off wavelengths. All filters show relatively more melanopsin attenuation than luminance attenuation (lower melanopsin transmittance than luminous transmittance). Across the data set, we find that melanopsin transmittance and luminous transmittance are correlated. CONCLUSIONS: We suggest that future studies and examinations of the physiological effects of optical filters quantify the visual and non‐visual effects of the filters beyond the spectral transmittance, which will eventually aid in developing a mechanistic understanding of how different filters affect physiology. We strongly discourage comparing the downstream effects of different filters on, e.g. sleep or circadian responses, without considering their effects on the retinal stimulus. |
format | Online Article Text |
id | pubmed-6887545 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-68875452019-12-03 Visual and non‐visual properties of filters manipulating short‐wavelength light Spitschan, Manuel Lazar, Rafael Cajochen, Christian Ophthalmic Physiol Opt Technical Note PURPOSE: Optical filters and tints manipulating short‐wavelength light (sometimes called ‘blue‐blocking’ or ‘blue‐attenuating’ filters) are used in the management of a range of ocular, retinal, neurological and psychiatric disorders. In many cases, the only available quantification of the optical effects of a given optical filter is the spectral transmittance, which specifies the amount of light transmitted as a function of wavelength. METHODS: We propose a novel physiologically relevant and retinally referenced framework for quantifying the visual and non‐visual effects of these filters, incorporating the attenuation of luminance (luminous transmittance), the attenuation of melanopsin activation (melanopsin transmittance), the colour shift, and the reduction of the colour gamut (gamut reduction). Using these criteria, we examined a novel database of spectral transmittance functions of optical filters (n = 121) which were digitally extracted from a variety of sources. RESULTS: We find a large diversity in the alteration of visual and non‐visual properties. The spectral transmittance properties of the examined filters vary widely, in terms of shapes and cut‐off wavelengths. All filters show relatively more melanopsin attenuation than luminance attenuation (lower melanopsin transmittance than luminous transmittance). Across the data set, we find that melanopsin transmittance and luminous transmittance are correlated. CONCLUSIONS: We suggest that future studies and examinations of the physiological effects of optical filters quantify the visual and non‐visual effects of the filters beyond the spectral transmittance, which will eventually aid in developing a mechanistic understanding of how different filters affect physiology. We strongly discourage comparing the downstream effects of different filters on, e.g. sleep or circadian responses, without considering their effects on the retinal stimulus. John Wiley and Sons Inc. 2019-11-06 2019-11 /pmc/articles/PMC6887545/ /pubmed/31696535 http://dx.doi.org/10.1111/opo.12648 Text en © 2019 The Authors. Ophthalmic and Physiological Optics published by John Wiley & Sons Ltd on behalf of College of Optometrists This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Technical Note Spitschan, Manuel Lazar, Rafael Cajochen, Christian Visual and non‐visual properties of filters manipulating short‐wavelength light |
title | Visual and non‐visual properties of filters manipulating short‐wavelength light |
title_full | Visual and non‐visual properties of filters manipulating short‐wavelength light |
title_fullStr | Visual and non‐visual properties of filters manipulating short‐wavelength light |
title_full_unstemmed | Visual and non‐visual properties of filters manipulating short‐wavelength light |
title_short | Visual and non‐visual properties of filters manipulating short‐wavelength light |
title_sort | visual and non‐visual properties of filters manipulating short‐wavelength light |
topic | Technical Note |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6887545/ https://www.ncbi.nlm.nih.gov/pubmed/31696535 http://dx.doi.org/10.1111/opo.12648 |
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