Toric orthokeratology for highly astigmatic children

Optometry and Vision Science : Official Publication of the American Academy of Optometry
Chia Chi ChenPauline Cho

Abstract

To determine the efficacy of toric orthokeratology (ortho-k) in correcting myopia and astigmatism in myopic children with moderate to high astigmatism. Asymptomatic subjects aged 6 to 12 years with myopia of 0.50 to 5.00 D and astigmatism of 1.25 to 3.50 D of axes 180 ± 20° were fitted with Menicon Z Night Toric Lens (NKL Contactlenzen B.V., Emmen, The Netherlands). Data collection was performed at baseline and 1 night, 1 week, and 1 month after the commencement of lens wear. The results from the right eye or the eye with higher astigmatism were reported. The first lens fit success rate was 95%. Two subjects had to be refitted due to lens decentration and inadequate central clearance after one overnight lens wear and were successfully fitted with a second pair of lenses. Toric ortho-k significantly reduced the manifest myopia from 2.53 ± 1.31 D to 0.41 ± 0.43 D and astigmatism from 1.91 ± 0.64 D to 0.40 ± 0.39 D (paired t-tests, p < 0.02) after 1 month of lens wear. The unaided visual acuity (logMAR) was 0.11 ± 0.13 after 1 month of lens wear. No significant lens binding, corneal staining, or other adverse events were observed during this period of lens wear. This toric lens design lens, with a first lens fit success rate of 95...Continue Reading

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Citations

Mar 19, 2014·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Scott A ReadMichael J Collins
Dec 17, 2016·Korean Journal of Ophthalmology : KJO·Byul LyuKyung Sun Na
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Nov 1, 2018·Clinical & Experimental Optometry : Journal of the Australian Optometrical Association·Pauline Cho, Qi Tan
Oct 7, 2017·Japanese Journal of Ophthalmology·Yanlin LiuKai Wang
Aug 31, 2019·Scientific Reports·Andrew K C LamDavid C C Lam
Mar 30, 2021·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Stephen J VincentLyndon Jones

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