Highlights
- •Orthokeratology changes the relative peripheral astigmatic components in patients with early-adult onset myopia.
- •Despite their ages, the early-adult onset myopes presented in this case series experienced a significant myopia progression before they were treated with orthokeratology.
- •After starting orthokeratology treatment these patients showed slower progression or no progression of their refractive error.
- •Axial length remained stable during orthokeratology treatment in early-adult onset myopia.
Abstract
Purpose
To describe the stabilization of early adult-onset myopia in three university students
after initiating orthokeratology treatment with corneal refractive therapy contact
lenses.
Methods
Three Caucasian early adult-onset progressing myopic subjects (1 male, 2 females)
were fitted with corneal refractive therapy lenses to correct myopia between −1.50
and −2.50 D of sphere using Paragon CRT (Paragon Vision Sciences, Mesa, AZ) lenses for overnight
orthokeratology. The pre-treatment refractive history from 2005 as well as refraction
and axial length after treatment onset are reported over a period of 3 years between
December 2009 and January 2013 with an additional year of follow-up after treatment
discontinuation (January–December 2013). The peripheral refractive patterns and topographic
changes are also reported individually.
Results
Treatment was successful in all three subjects achieving uncorrected visual acuity
of 20/20 or better monocularly. During a period of 3 years of follow-up the subjects
did not experience progression in their refractive error, nor in their axial length
(measured during the last 2 years of treatment and 1 year after discontinuation).
Furthermore, the subjects recovered to their baseline refraction and did not progressed
further over the following year after lens wear discontinuation.
Conclusions
We cannot attribute a causative effect to the orthokeratology treatment alone as underlying
mechanism for myopia stabilization in this 3 patients. However, the present report
points to the possibility of stabilization of early adult-onset myopia progression
in young adults using corneal refractive therapy treatment.
Keywords
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Article info
Publication history
Published online: July 15, 2015
Accepted:
June 30,
2015
Received in revised form:
June 2,
2015
Received:
December 22,
2014
Identification
Copyright
© 2015 Elsevier Ltd. Published by Elsevier Inc. All rights reserved.
