Abstract
Objective
To determine changes in various ocular parameters of adults wearing orthokeratology
(ortho-k) lenses and their levels of satisfaction and quality of life (QoL) after commencing
treatment.
Methods
Adults aged 18–38 years, with mild to moderate myopia and astigmatism < 1.50D, were
wearing ortho-k lenses for one year. Data collection, which included history taking, refraction,
axial length (AL), corneal topography, corneal biomechanics, and biomicroscopy examination,
was performed at baseline and every 6 months during the study period. The level of
satisfaction with the treatment and QoL was determined via questionnaires.
Results
Forty-four subjects completed the study. AL was shortened significantly at the 12-month
visit: AL −0.03 (-0.45 to 0.13) mm compared to baseline (p < 0.05). A significant number of subjects in both groups presented with overall and
central corneal staining, but the majority were mild (Grade 1). Central endothelial
cell density was reduced by 40/mm2 (loss rate 1.4 %) (p < 0.05). High scores were obtained in the satisfaction questionnaire, with no significant
differences between visits. At the 12-month visit, NEI-RQL-42 total score, dependence
on correction, activity limitation, appearance, and satisfaction with the treatment
all significantly increased compared to baseline values.
Conclusions
Results suggest that ortho-k can be an effective and safe myopia correction technique for adults with low to
moderate myopia, improving daytime vision without serious adverse events. Satisfaction
with ortho-k lens wear was high, particularly those who were dependent on vision correction
and found spectacles or contact lenses limiting specific activities or cosmetically
undesirable.
Keywords
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Article info
Publication history
Published online: March 09, 2023
Accepted:
February 20,
2023
Received in revised form:
February 19,
2023
Received:
July 29,
2022
Publication stage
In Press Corrected ProofIdentification
Copyright
© 2023 British Contact Lens Association. Published by Elsevier Ltd. All rights reserved.
