Greater higher order aberrations induced by toric orthokeratology versus soft toric multifocal contact lens wear.
astigmatism
coma
higher order aberrations
multifocal contact lenses
spherical aberration
toric orthokeratology
Journal
Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)
ISSN: 1475-1313
Titre abrégé: Ophthalmic Physiol Opt
Pays: England
ID NLM: 8208839
Informations de publication
Date de publication:
07 2021
07 2021
Historique:
received:
20
01
2021
accepted:
16
04
2021
pubmed:
3
6
2021
medline:
15
12
2021
entrez:
2
6
2021
Statut:
ppublish
Résumé
Spherical orthokeratology and soft multifocal contact lenses are commonly used for myopia control and correction, but have been shown to increase spherical aberration, coma and total higher order root mean square (HORMS) aberrations. There are limited myopia control contact lens options for patients with moderate to high astigmatism. The purpose of this study was to quantify changes in higher order aberrations (HOA) in myopic astigmatic eyes fitted with toric orthokeratology (TOK) and soft toric multifocal (STM) contact lenses. Ocular wavefront aberrations were measured in both eyes of 30 adult subjects and are reported through the 6th radial order over a 5 mm, dilated pupil. All eyes met refractive criteria of myopia (-5.00 D to plano) and cylinder (-3.50 to -1.25 D). Three measurements were taken at baseline and after 10 ± 2 days of lens wear (TOK, STM). Sixteen subjects achieved logMAR high contrast visual acuity of 0.30 or better in both eyes and were included in this analysis. Repeated measures analysis of variance and post-hoc paired t-tests were used, as appropriate, with Benjamini-Hochberg correction. Higher order root mean square, spherical aberration (C12), and coma RMS (C7, C8) increased with TOK (0.641 [0.222], 0.409 [0.157], 0.426 [0.187] µm, respectively) and STM (0.481 [0.107], 0.223 [0.139], 0.320 [0.130] µm, respectively) from baseline (all p < 0.001). TOK was elevated compared to STM for HORMS (p = 0.03), spherical aberration (p = 0.001) and coma RMS (p = 0.04). Toric orthokeratology induced more HORMS, spherical aberration and coma RMS than STM in myopic astigmats; however, both lens types showed an increase in HOA compared to baseline, which placed patients outside the age and pupil size matched normative ranges. While the optical changes that accompany these modalities are helpful for myopia management, the induction of HOAs may have unintended consequences on visual performance.
Identifiants
pubmed: 34076904
doi: 10.1111/opo.12839
pmc: PMC8217292
mid: NIHMS1704012
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Langues
eng
Sous-ensembles de citation
IM
Pagination
726-735Subventions
Organisme : NEI NIH HHS
ID : L30 EY030691
Pays : United States
Organisme : NEI NIH HHS
ID : P30 EY007551
Pays : United States
Informations de copyright
© 2021 The Authors Ophthalmic and Physiological Optics © 2021 The College of Optometrists.
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