Cargando…
Refractive error, visual acuity, and corneal-curvature changes in high and low myopes with orthokeratology treatment: A Malaysian study
BACKGROUND/PURPOSE: The effect of orthokeratology (OK) on low myopia is well known, but there are a few reports on its effect on high myopia. In this study, the parametric changes in high and low myopia as results of wearing OK lenses for a period of 6 months have been analyzed. METHODS: Records of...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medknow Publications & Media Pvt Ltd
2015
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5602134/ https://www.ncbi.nlm.nih.gov/pubmed/29018692 http://dx.doi.org/10.1016/j.tjo.2015.07.006 |
_version_ | 1783264531158401024 |
---|---|
author | Liong, Swee Lee Mohidin, Norhani Tan, Bay Wah Ali, Bariah Mohd |
author_facet | Liong, Swee Lee Mohidin, Norhani Tan, Bay Wah Ali, Bariah Mohd |
author_sort | Liong, Swee Lee |
collection | PubMed |
description | BACKGROUND/PURPOSE: The effect of orthokeratology (OK) on low myopia is well known, but there are a few reports on its effect on high myopia. In this study, the parametric changes in high and low myopia as results of wearing OK lenses for a period of 6 months have been analyzed. METHODS: Records of schoolchildren (age 7–17 years) undergoing OK treatment from an optometry clinic were retrospectively reviewed. Data involving refractive errors, uncorrected visual acuity, and corneal curvatures at baseline and after 1 day, 1 week, 1 month, 3 months, and 6 months of OK treatment from 25 patients who fulfilled the inclusion criteria were examined. For the analysis, the participants were arbitrarily divided into two groups comprising high myopia (< −6.00 D) and low to moderate myopia (from −1.00 D to −6.00 D). RESULTS: Significant reductions of refractive error, improvement in visual acuity, and corneal-curvature flattening were found in all participants after 6 months of OK lens wear compared to the baseline. No significant changes were found in corneal toricity in both high and low to moderate myopic groups. Almost all of these occurred after one night of lens wear in both the high- and low-myopia groups. CONCLUSION: The OK lens wear significantly reduced the refractive error and corneal curvature that results in the improvement in visual acuity in both high- and low-myopia groups, and the reduction seemed to occur nearly at the same time despite the difference in initial myopic power. High myopes with refractive power up to −8.25 D would benefit significantly from OK lenses. |
format | Online Article Text |
id | pubmed-5602134 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Medknow Publications & Media Pvt Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-56021342017-10-10 Refractive error, visual acuity, and corneal-curvature changes in high and low myopes with orthokeratology treatment: A Malaysian study Liong, Swee Lee Mohidin, Norhani Tan, Bay Wah Ali, Bariah Mohd Taiwan J Ophthalmol Original Article BACKGROUND/PURPOSE: The effect of orthokeratology (OK) on low myopia is well known, but there are a few reports on its effect on high myopia. In this study, the parametric changes in high and low myopia as results of wearing OK lenses for a period of 6 months have been analyzed. METHODS: Records of schoolchildren (age 7–17 years) undergoing OK treatment from an optometry clinic were retrospectively reviewed. Data involving refractive errors, uncorrected visual acuity, and corneal curvatures at baseline and after 1 day, 1 week, 1 month, 3 months, and 6 months of OK treatment from 25 patients who fulfilled the inclusion criteria were examined. For the analysis, the participants were arbitrarily divided into two groups comprising high myopia (< −6.00 D) and low to moderate myopia (from −1.00 D to −6.00 D). RESULTS: Significant reductions of refractive error, improvement in visual acuity, and corneal-curvature flattening were found in all participants after 6 months of OK lens wear compared to the baseline. No significant changes were found in corneal toricity in both high and low to moderate myopic groups. Almost all of these occurred after one night of lens wear in both the high- and low-myopia groups. CONCLUSION: The OK lens wear significantly reduced the refractive error and corneal curvature that results in the improvement in visual acuity in both high- and low-myopia groups, and the reduction seemed to occur nearly at the same time despite the difference in initial myopic power. High myopes with refractive power up to −8.25 D would benefit significantly from OK lenses. Medknow Publications & Media Pvt Ltd 2015 2015-09-12 /pmc/articles/PMC5602134/ /pubmed/29018692 http://dx.doi.org/10.1016/j.tjo.2015.07.006 Text en Copyright: © 2015, The Ophthalmologic Society of Taiwan http://creativecommons.org/licenses/by-nc-nd/4.0 This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Original Article Liong, Swee Lee Mohidin, Norhani Tan, Bay Wah Ali, Bariah Mohd Refractive error, visual acuity, and corneal-curvature changes in high and low myopes with orthokeratology treatment: A Malaysian study |
title | Refractive error, visual acuity, and corneal-curvature changes in high and low myopes with orthokeratology treatment: A Malaysian study |
title_full | Refractive error, visual acuity, and corneal-curvature changes in high and low myopes with orthokeratology treatment: A Malaysian study |
title_fullStr | Refractive error, visual acuity, and corneal-curvature changes in high and low myopes with orthokeratology treatment: A Malaysian study |
title_full_unstemmed | Refractive error, visual acuity, and corneal-curvature changes in high and low myopes with orthokeratology treatment: A Malaysian study |
title_short | Refractive error, visual acuity, and corneal-curvature changes in high and low myopes with orthokeratology treatment: A Malaysian study |
title_sort | refractive error, visual acuity, and corneal-curvature changes in high and low myopes with orthokeratology treatment: a malaysian study |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5602134/ https://www.ncbi.nlm.nih.gov/pubmed/29018692 http://dx.doi.org/10.1016/j.tjo.2015.07.006 |
work_keys_str_mv | AT liongsweelee refractiveerrorvisualacuityandcornealcurvaturechangesinhighandlowmyopeswithorthokeratologytreatmentamalaysianstudy AT mohidinnorhani refractiveerrorvisualacuityandcornealcurvaturechangesinhighandlowmyopeswithorthokeratologytreatmentamalaysianstudy AT tanbaywah refractiveerrorvisualacuityandcornealcurvaturechangesinhighandlowmyopeswithorthokeratologytreatmentamalaysianstudy AT alibariahmohd refractiveerrorvisualacuityandcornealcurvaturechangesinhighandlowmyopeswithorthokeratologytreatmentamalaysianstudy |