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KMID : 1038920210200030089
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Annals of Optometry and Contact Lens
2021 Volume.20 No. 3 p.89 ~ p.93
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Prescription and Effect of Orthokeratology Lenses
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Choi Jin-Seok
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Abstract
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Orthokeratology (OK) is the way to correct the myopia or astigmatism by flattening or the central cornea with specialty lenses. The range of correction is from -2.50 to -4.00 diopters after 10 days of fitting. The designs are constructed with flat base curve radius, steep reverse curve, flat alignment curve, and peripheral curve. This multi-curve design enabled the OK lenses to stay on the cornea stably and effectively. Recently, the application of OK is extending to hyperopia and presbyopia. In the future, the amount of correction and the application of OK will increase more and more.
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KEYWORD
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Lens, Myopia, Orthokeratology
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