Effect of orthokeratology on peripheral aberrations of the eye


Autoria(s): Mathur, Ankit; Atchison, David
Data(s)

01/05/2009

Resumo

Purpose: To investigate the effect of orthokeratology on peripheral aberrations in two myopic volunteers. Methods: The subjects wore reverse geometry orthokeratology lenses overnight and were monitored for 2 weeks of wear. They underwent corneal topography, peripheral refraction (out to ±34° along the horizontal visual field) and peripheral aberration measurements across the 42° × 32° central visual field using a modified Hartmann-Shack aberrometer. Results: Spherical equivalent refraction was corrected for the central 25° of the visual fields beyond which it gradually returned to its preorthokeratology values. There were increases in axial coma, spherical aberration, higher order root mean square aberrations, and total root-mean-squared aberrations (excluding defocus). The rates of change of vertical and horizontal coma across the field changed in sign. Total root mean square aberrations showed a quadratic rate of change across the visual field which was greater subsequent to orthokeratology. Conclusion: Although orthokeratology can correct peripheral relative hypermetropia it induces dramatic increases in higher-order aberrations across the field

Formato

application/pdf

Identificador

http://eprints.qut.edu.au/29559/

Publicador

Lippincott, Williams & Wilkins

Relação

http://eprints.qut.edu.au/29559/1/29559.pdf

DOI:10.1097/OPX.0b013e31819fa5aa

Mathur, Ankit & Atchison, David (2009) Effect of orthokeratology on peripheral aberrations of the eye. Optometry and Vision Science, 86(5), pp. 476-484.

Direitos

Copyright 2009 American Academy of Optometry.

Copyright American Academy of Optometry. Unauthorised reproduction of this article is prohibited.

Fonte

Faculty of Health; Institute of Health and Biomedical Innovation; School of Optometry & Vision Science

Palavras-Chave #111301 Ophthalmology #111303 Vision Science #Aberrations #Coma #Corneal refractive surgery #corneal topography #myopia #orthokeratology #Peripheral aberrations #Peripheral Ocular aberrations #Peripheral refraction
Tipo

Journal Article