Please use this identifier to cite or link to this item: https://hdl.handle.net/1822/68745

TitleThe impact of overnight orthokeratology on accommodative response in myopic subjects
Author(s)Pereira-da-Mota, Ana F.
Costa, Jéssica
Amorim-de-Sousa, Ana
González-Méijome, José Manuel
Queirós, A.
Keywordsorthokeratology
accommodation
myopia control
contact lenses
Issue date2020
PublisherMultidisciplinary Digital Publishing Institute
JournalJournal of Clinical Medicine
Abstract(s)This study aimed to evaluate the effects of two months of orthokeratology (OK) treatment in the accommodative response of young adult myopes. Twenty eyes (21.8 ± 1.8 years) were fitted with the Paragon CRT<sup>®</sup> 100 LENS to treat myopia between −1.00 and −2.00 D. Low- and high-contrast visual acuity (LCDVA and HCDVA), central objective refraction, light disturbance (LD), and objective accommodative response (using the Grand Seiko WAM-5500 open-field autorefractometer coupled with a Badal system) were measured at baseline (BL) before lens wear and after 1, 15, 30, and 60 nights of OK. Refractive error correction was achieved during the first fifty days of OK lens wear, with minimal changes afterwards. LD analysis showed a transient increase followed by a reduction to baseline levels over the first 30 nights of treatment. The accommodative response was lower than expected for all target vergences in all visits (BL: 0.61 D at 1.00 D to 0.96 D at 5.00 D; 60 N: 0.36 D at 1.00 D to 0.79 D at 5.00 D). On average, the accommodative lag decreases over time with OK lens wear. However, these differences were not statistically significant (<i>p</i> > 0.050, repeated-measures ANOVA and Friedman test). This shows that overnight OK treatment does not affect objectively measured the accommodative response of young, low myopic eyes after two months of treatment stabilization.
TypeArticle
URIhttps://hdl.handle.net/1822/68745
DOI10.3390/jcm9113687
e-ISSN2077-0383
Publisher versionhttps://www.mdpi.com/2077-0383/9/11/3687
Peer-Reviewedyes
AccessOpen access
Appears in Collections:ASSESSMENT AND ENHANCING VISUAL PERFORMANCE (2018 - ...)

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