Changes in refraction and contrast sensitivity following short term orthokeratology treatment in high myopic school children: a pilot study

Changes in refraction and contrast sensitivity following short term orthokeratology treatment in high myopic school children: a pilot study

It is well established the efficacy of orthokeratology (OK) treatment in improving refraction and visual acuity (VA) of low myopic subjects. However, limited data is available on high myopes. The purpose of this study was to investigate the changes of refraction, VA and contrast sensitivity (CS) ove...

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Main Authors: Bariah Mohd-Ali, Tan, Bay Wah, Norhani Mohidin
Format: Article
Language:English
Published: Universiti Kebangsaan Malaysia 2014
Online Access:http://journalarticle.ukm.my/7154/
http://journalarticle.ukm.my/7154/
http://journalarticle.ukm.my/7154/1/11_Bariah_Mohd-Ali.pdf
id ukm-7154
recordtype eprints
spelling ukm-71542016-12-14T06:43:15Z http://journalarticle.ukm.my/7154/ Changes in refraction and contrast sensitivity following short term orthokeratology treatment in high myopic school children: a pilot study Bariah Mohd-Ali, Tan, Bay Wah Norhani Mohidin, It is well established the efficacy of orthokeratology (OK) treatment in improving refraction and visual acuity (VA) of low myopic subjects. However, limited data is available on high myopes. The purpose of this study was to investigate the changes of refraction, VA and contrast sensitivity (CS) over time in high myopic school children after 1 week of overnight OK treatment. A total of 19 high myopic school children were fitted with OK lenses. Mean refraction at baseline was -6.29±1.25 DS. Refraction was conducted using cross cylinder method and LogMAR chart. CS was evaluated using Pelli-Robson and FACT charts. All measurements were taken at baseline, 1, 2, 3 and 7 days after overnight OK. Data was analyzed using repeated measures of ANOVA. The results showed that refraction and CS were significantly improved throughout the study period (p<0.05). Significant changes in all parameters were noted after the first overnight treatment. Mean refraction and unaided VA after 7 nights of treatment was -0.64±1.17DS and 0.08±0.29, respectively. The results from Pelli-Robson and FACT charts showed improvement comparable to aided baseline values (p>0.05). This study concludes that overnight OK reduces refraction but does not compromise VA and CS in high myopic children within the study period. Further studies are needed to determine the long term impact of OK treatment on visual functions in a larger sample of high myopic children. Universiti Kebangsaan Malaysia 2014-05 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/7154/1/11_Bariah_Mohd-Ali.pdf Bariah Mohd-Ali, and Tan, Bay Wah and Norhani Mohidin, (2014) Changes in refraction and contrast sensitivity following short term orthokeratology treatment in high myopic school children: a pilot study. Sains Malaysiana, 43 (5). pp. 733-737. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type Digital Repository
institution_category Local University
institution Universiti Kebangasaan Malaysia
building UKM Institutional Repository
collection Online Access
language English
description It is well established the efficacy of orthokeratology (OK) treatment in improving refraction and visual acuity (VA) of low myopic subjects. However, limited data is available on high myopes. The purpose of this study was to investigate the changes of refraction, VA and contrast sensitivity (CS) over time in high myopic school children after 1 week of overnight OK treatment. A total of 19 high myopic school children were fitted with OK lenses. Mean refraction at baseline was -6.29±1.25 DS. Refraction was conducted using cross cylinder method and LogMAR chart. CS was evaluated using Pelli-Robson and FACT charts. All measurements were taken at baseline, 1, 2, 3 and 7 days after overnight OK. Data was analyzed using repeated measures of ANOVA. The results showed that refraction and CS were significantly improved throughout the study period (p<0.05). Significant changes in all parameters were noted after the first overnight treatment. Mean refraction and unaided VA after 7 nights of treatment was -0.64±1.17DS and 0.08±0.29, respectively. The results from Pelli-Robson and FACT charts showed improvement comparable to aided baseline values (p>0.05). This study concludes that overnight OK reduces refraction but does not compromise VA and CS in high myopic children within the study period. Further studies are needed to determine the long term impact of OK treatment on visual functions in a larger sample of high myopic children.
format Article
author Bariah Mohd-Ali,
Tan, Bay Wah
Norhani Mohidin,
spellingShingle Bariah Mohd-Ali,
Tan, Bay Wah
Norhani Mohidin,
Changes in refraction and contrast sensitivity following short term orthokeratology treatment in high myopic school children: a pilot study
author_facet Bariah Mohd-Ali,
Tan, Bay Wah
Norhani Mohidin,
author_sort Bariah Mohd-Ali,
title Changes in refraction and contrast sensitivity following short term orthokeratology treatment in high myopic school children: a pilot study
title_short Changes in refraction and contrast sensitivity following short term orthokeratology treatment in high myopic school children: a pilot study
title_full Changes in refraction and contrast sensitivity following short term orthokeratology treatment in high myopic school children: a pilot study
title_fullStr Changes in refraction and contrast sensitivity following short term orthokeratology treatment in high myopic school children: a pilot study
title_full_unstemmed Changes in refraction and contrast sensitivity following short term orthokeratology treatment in high myopic school children: a pilot study
title_sort changes in refraction and contrast sensitivity following short term orthokeratology treatment in high myopic school children: a pilot study
publisher Universiti Kebangsaan Malaysia
publishDate 2014
url http://journalarticle.ukm.my/7154/
http://journalarticle.ukm.my/7154/
http://journalarticle.ukm.my/7154/1/11_Bariah_Mohd-Ali.pdf
first_indexed 2023-09-18T19:48:54Z
last_indexed 2023-09-18T19:48:54Z
_version_ 1777406086478823424

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