Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/89254
PIRA download icon_1.1View/Download Full Text
DC FieldValueLanguage
dc.contributorSchool of Optometryen_US
dc.creatorVyas, SAen_US
dc.creatorKee, CSen_US
dc.date.accessioned2021-03-01T05:58:06Z-
dc.date.available2021-03-01T05:58:06Z-
dc.identifier.issn0146-0404en_US
dc.identifier.urihttp://hdl.handle.net/10397/89254-
dc.language.isoenen_US
dc.publisherAssociation for Research in Vision and Ophthalmologyen_US
dc.rightsCopyright 2021 The Authorsen_US
dc.rightsThis 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.rightsThe following publication Vyas, S. A., & Kee, C. S. (2021). Early astigmatism can alter myopia development in chickens. Investigative Ophthalmology & Visual Science, 62(2), 1-16 is available at https://doi.org/10.1167/iovs.62.2.27en_US
dc.subjectMyopia developmenten_US
dc.subjectAstigmatismen_US
dc.subjectChickenen_US
dc.titleEarly astigmatism can alter myopia development in chickensen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage1en_US
dc.identifier.epage16en_US
dc.identifier.volume62en_US
dc.identifier.issue2en_US
dc.identifier.doi10.1167/iovs.62.2.27en_US
dcterms.abstractPurpose: To determine the effects of optically imposed astigmatism on myopia development in chickens.en_US
dcterms.abstractMethods: Chicks were randomly assigned to wear either spherical (−10D, “LIM”, n = 14) or sphero-cylindrical lenses (n ≥ 19 in each group) monocularly for a week from 5 days of age. All lenses imposed the same magnitude of spherical-equivalent hyperopic defocus (−10D), with the two astigmatic magnitudes (−8D or −4D) and four axes (45°, 90°, 135°, or 180°) altered to simulate four subtypes of clinical astigmatism. At the end of the treatment, refractive state was measured for all birds, whereas ocular axial dimensions and corneal curvature were measured for subsets of birds.en_US
dcterms.abstractResults: Sphero-cylindrical lens wear produced significant impacts on nearly all refractive parameters (P < 0.001), resulting in myopic-astigmatic errors in the treated eyes. Compared to LIM, the presence of astigmatic blur induced lower myopic error (all except L180 group, P < 0.001) but with higher refractive astigmatism (all P < 0.001) in birds treated with sphero-cylindrical lenses. Distributions of the refractive, axial, and corneal shape parameters in the sphero-cylindrical lens-wear groups indicated that the astigmatic blur had directed the eye growth toward the least hyperopic image plane, with against-the-rule (ATR) and with-the-rule (WTR) astigmatisms typically inducing differential biometric changes.en_US
dcterms.abstractConclusions: The presence of early astigmatism predictably altered myopia development in chicks. Furthermore, the differential effects of WTR and ATR astigmatisms on anterior and posterior segment changes suggest that the eye growth mechanism is sensitive to the optical properties of astigmatism.en_US
dcterms.accessRightsopen access-
dcterms.bibliographicCitationInvestigative ophthalmology and visual science, Feb. 2021, v.62, no. 2, 27, p. 1-16en_US
dcterms.isPartOfInvestigative ophthalmology and visual scienceen_US
dcterms.issued2021-02-
dc.identifier.eissn1552-5783en_US
dc.identifier.artn27en_US
dc.description.validate202103 bcrcen_US
dc.description.oaVersion of Record-
dc.identifier.FolderNumbera0591-n01-
dc.description.fundingSourceRGCen_US
dc.description.fundingSourceOthersen_US
dc.description.fundingTextRGC: 151011/14M, 151004/18M||Others: P0000341en_US
dc.description.pubStatusPublished-
Appears in Collections:Journal/Magazine Article
Files in This Item:
File Description SizeFormat 
i1552-5783-62-2-27_1613723066.0735.pdf1.97 MBAdobe PDFView/Open
Open Access Information
Status open access
File Version Version of Record
Access
View full-text via PolyU eLinks SFX Query
Show simple item record

Page views

98
Last Week
2
Last month
Citations as of Mar 24, 2024

Downloads

47
Citations as of Mar 24, 2024

SCOPUSTM   
Citations

10
Citations as of Mar 29, 2024

WEB OF SCIENCETM
Citations

8
Citations as of Mar 28, 2024

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.