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http://hdl.handle.net/10397/95757
DC Field | Value | Language |
---|---|---|
dc.contributor | School of Optometry | en_US |
dc.contributor | Research Centre for SHARP Vision | en_US |
dc.creator | Chan, KH | en_US |
dc.creator | Shik, HT | en_US |
dc.creator | Kwok, KW | en_US |
dc.creator | Kee, CS | en_US |
dc.creator | Leung, TW | en_US |
dc.date.accessioned | 2022-10-05T08:38:14Z | - |
dc.date.available | 2022-10-05T08:38:14Z | - |
dc.identifier.issn | 0146-0404 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/95757 | - |
dc.language.iso | en | en_US |
dc.publisher | Association for Research in Vision and Ophthalmology | en_US |
dc.rights | Copyright 2022 The Authors | en_US |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (https://creativecommons.org/licenses/by-nc-nd/4.0/). | en_US |
dc.rights | The following publication Chan, K. H., Shik, H. T., Kwok, K. W., Kee, C. S., Leung, T. W. (2022). Bi-directional Refractive Compensation for With-the-Rule and Against-the-Rule Astigmatism in Young Adults. Investigative ophthalmology and visual science, 63(10), 63 is available at https://doi.org/10.1167/iovs.63.10.15 | en_US |
dc.subject | Astigmatism | en_US |
dc.subject | Compensation | en_US |
dc.subject | Adaptation | en_US |
dc.subject | Astigmatic defocus | en_US |
dc.title | Bi-directional refractive compensation for with-the-rule and against-the-rule astigmatism in young adults | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.volume | 63 | en_US |
dc.identifier.issue | 10 | en_US |
dc.identifier.doi | 10.1167/iovs.63.10.15 | en_US |
dcterms.abstract | Purpose: The purpose of this study was to investigate the short-term effect of imposing astigmatism on the refractive states of young adults. | en_US |
dcterms.abstract | Methods: Nineteen visually healthy low-astigmatic young adults (age = 20.94 ± 0.37 years; spherical-equivalent errors [M] = −1.47 ± 0.23 diopters [D]; cylindrical errors = −0.32 ± 0.05 D) were recruited. They were asked to wear a trial frame with treated and control lenses while watching a video for an hour. In three separate visits, the treated eye was exposed to one of three defocused conditions in random sequence: (1) with-the-rule (WTR) astigmatism = +3.00 DC × 180 degrees; (2) against-the-rule (ATR) astigmatism = +3.00 DC × 90 degrees; and (3) spherical defocus (SPH) = +3.00 DS. The control eye was fully corrected optically. Before and after watching the video, non-cycloplegic autorefraction was performed over the trial lenses. Refractive errors were decomposed into M, J0, and J45 astigmatism. Interocular differences in refractions (treated eye – control eye) were analyzed. | en_US |
dcterms.abstract | Results: After participants watched the video with monocular astigmatic defocus for an hour, the magnitude of the J0 astigmatism was significantly reduced by 0.25 ± 0.10 D in both WTR (from +1.53 ± 0.07 D to +1.28 ± 0.09 D) and 0.39 ± 0.15 D in ATR conditions (from −1.33 ± 0.06 D to −0.94 ± 0.18 D), suggesting an active compensation. In contrast, changes in J0 astigmatism were not significant in the SPH condition. No compensatory changes in J45 astigmatism or M were found under any conditions. | en_US |
dcterms.abstract | Conclusions: Watching a video for an hour with astigmatic defocus induced bidirectional, compensatory changes in astigmatic components, suggesting that refractive components of young adults are moldable to compensate for orientation-specific astigmatic blur over a short period. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Investigative ophthalmology and visual science, Sept. 2022, v. 63, no. 10, 15 | en_US |
dcterms.isPartOf | Investigative ophthalmology and visual science | en_US |
dcterms.issued | 2022-09 | - |
dc.identifier.eissn | 1552-5783 | en_US |
dc.identifier.artn | 15 | en_US |
dc.description.validate | 202209 bckw | en_US |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | a1778-n01, a2210 | - |
dc.identifier.SubFormID | 47039 | - |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | Departmental General Research Fund and One-line Budget by the Hong Kong Polytechnic University, Hong Kong SAR (#P0031874 & P0034097) | en_US |
dc.description.pubStatus | Published | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
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i1552-5783-63-10-15_1664001254.2753.pdf | 673.28 kB | Adobe PDF | View/Open |
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