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The impact of spectacle lenses for myopia control on visual functions
PURPOSE: Spectacle lenses containing multiple small peripheral elements have been developed for myopia control in children. It is important that their effect on vision be quantified by (i) fixation through the peripheral portion, thereby using foveal vision and (ii) by fixation through the central p...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9291741/ https://www.ncbi.nlm.nih.gov/pubmed/34529275 http://dx.doi.org/10.1111/opo.12878 |
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author | Gao, Yi Lim, Ee Woon Yang, Adeline Drobe, Björn Bullimore, Mark A |
author_facet | Gao, Yi Lim, Ee Woon Yang, Adeline Drobe, Björn Bullimore, Mark A |
author_sort | Gao, Yi |
collection | PubMed |
description | PURPOSE: Spectacle lenses containing multiple small peripheral elements have been developed for myopia control in children. It is important that their effect on vision be quantified by (i) fixation through the peripheral portion, thereby using foveal vision and (ii) by fixation through the central portion and presentation of peripheral targets. METHODS: The above approaches were used in five studies to evaluate two novel spectacle lens designs: spectacle lenses with Highly Aspherical Lenslets (HAL) and Slightly Aspherical Lenslets (SAL). A single vision lens served as a control. Visually normal adults participated in each study. The first two studies had subjects fixate through the periphery of the lenses. High and low (10%) contrast visual acuity was measured with the Freiburg Vision Test and reading speed for high and low contrast words measured with a sentence generator. The other three studies assessed peripheral vision while subjects fixated through the central portion of the lens. Peripheral contrast sensitivity was measured using two cycles per degree drifting Gabor stimuli. Peripheral motion perception was further evaluated using random dot stimuli. Finally, attention was measured using an established test of useful field of view with three levels of complexity. RESULTS: The periphery of the HAL lens significantly reduced low contrast visual acuity, but not high contrast visual acuity, while the effect of the SAL lens was not significant for either. Neither test lens affected reading speed for high contrast words, but the HAL lens significantly affected performance for low contrast words. Neither test lens affected peripheral motion perception or useful field of view. CONCLUSIONS: Low contrast visual acuity and reading was slightly reduced while high contrast visual acuity was unaffected when fixating through the periphery of the novel lens designs. None of the peripheral measures of vision was affected by the novel lens designs. |
format | Online Article Text |
id | pubmed-9291741 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-92917412022-07-20 The impact of spectacle lenses for myopia control on visual functions Gao, Yi Lim, Ee Woon Yang, Adeline Drobe, Björn Bullimore, Mark A Ophthalmic Physiol Opt Original Articles PURPOSE: Spectacle lenses containing multiple small peripheral elements have been developed for myopia control in children. It is important that their effect on vision be quantified by (i) fixation through the peripheral portion, thereby using foveal vision and (ii) by fixation through the central portion and presentation of peripheral targets. METHODS: The above approaches were used in five studies to evaluate two novel spectacle lens designs: spectacle lenses with Highly Aspherical Lenslets (HAL) and Slightly Aspherical Lenslets (SAL). A single vision lens served as a control. Visually normal adults participated in each study. The first two studies had subjects fixate through the periphery of the lenses. High and low (10%) contrast visual acuity was measured with the Freiburg Vision Test and reading speed for high and low contrast words measured with a sentence generator. The other three studies assessed peripheral vision while subjects fixated through the central portion of the lens. Peripheral contrast sensitivity was measured using two cycles per degree drifting Gabor stimuli. Peripheral motion perception was further evaluated using random dot stimuli. Finally, attention was measured using an established test of useful field of view with three levels of complexity. RESULTS: The periphery of the HAL lens significantly reduced low contrast visual acuity, but not high contrast visual acuity, while the effect of the SAL lens was not significant for either. Neither test lens affected reading speed for high contrast words, but the HAL lens significantly affected performance for low contrast words. Neither test lens affected peripheral motion perception or useful field of view. CONCLUSIONS: Low contrast visual acuity and reading was slightly reduced while high contrast visual acuity was unaffected when fixating through the periphery of the novel lens designs. None of the peripheral measures of vision was affected by the novel lens designs. John Wiley and Sons Inc. 2021-09-16 2021-11 /pmc/articles/PMC9291741/ /pubmed/34529275 http://dx.doi.org/10.1111/opo.12878 Text en © 2021 The Authors. Ophthalmic and Physiological Optics published by John Wiley & Sons Ltd on behalf of College of Optometrists https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Articles Gao, Yi Lim, Ee Woon Yang, Adeline Drobe, Björn Bullimore, Mark A The impact of spectacle lenses for myopia control on visual functions |
title | The impact of spectacle lenses for myopia control on visual functions |
title_full | The impact of spectacle lenses for myopia control on visual functions |
title_fullStr | The impact of spectacle lenses for myopia control on visual functions |
title_full_unstemmed | The impact of spectacle lenses for myopia control on visual functions |
title_short | The impact of spectacle lenses for myopia control on visual functions |
title_sort | impact of spectacle lenses for myopia control on visual functions |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9291741/ https://www.ncbi.nlm.nih.gov/pubmed/34529275 http://dx.doi.org/10.1111/opo.12878 |
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