Changes in Peripheral Refractive Profile after Orthokeratology for Different Degrees of Myopia

Purpose: The purpose of this study was to evaluate the effect of orthokeratology for different degrees of myopia correction in the relative location of tangential (F T ) and sagittal (F S ) power errors across the central 70° of the visual field in the horizontal meridian. Methods: Thirty-four right...

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Bibliographic Details
Published in:Current eye research 2016-01, Vol.41 (2), p.199-207
Main Authors: González-Méijome, José Manuel, Faria-Ribeiro, Miguel A., Lopes-Ferreira, Daniela P., Fernandes, Paulo, Carracedo, Gonzalo, Queiros, Antonio
Format: Article
Language:English
Subjects:
Adult
Astigmatism - physiopathology
Astigmatism - therapy
Contact Lenses
Female
Field curvature
Humans
Male
myopia
Myopia - physiopathology
Myopia - therapy
Orthokeratologic Procedures
orthokeratology
peripheral astigmatism
Refraction, Ocular - physiology
Visual Fields
Young Adult
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Summary:Purpose: The purpose of this study was to evaluate the effect of orthokeratology for different degrees of myopia correction in the relative location of tangential (F T ) and sagittal (F S ) power errors across the central 70° of the visual field in the horizontal meridian. Methods: Thirty-four right eyes of 34 patients with a mean age of 25.2 ± 6.4 years were fitted with Paragon CRT (Mesa, AZ) rigid gas permeable contact lenses to treat myopia (−2.15 ± 1.26D, range: −0.88 to −5.25D). Axial and peripheral refraction were measured along the central 70° of the horizontal visual field with the Grand Seiko WAM5500 open-field auto-refractor. Spherical equivalent (M), as well as tangential (F T ) and sagittal power errors (F S ) were obtained. Analysis was stratified in three groups according to baseline spherical equivalent: Group 1 [M Baseline  = −0.88 to −1.50D; n = 11], Group 2 [M Baseline  = −1.51 to −2.49D; n = 11], and Group 3 [M Baseline  = −2.50 to −5.25D; n = 12]. Results: Spherical equivalent was significantly more myopic after treatment beyond the central 40° of the visual field (p 
ISSN:0271-3683
1460-2202
DOI:10.3109/02713683.2015.1009634