Orthokeratology is the elimination, reduction, or change of myopic refractive error by programmed application of contact lenses. Accelerated ortho-k is a safe and effective alternative to refractive surgery, particularly for myopia of 3 D or less. We studied corneal thickness changes induced by applying ortho-k lenses over a period of eight weeks. Twelve subjects were evaluated using the pachometer, Orb Scan, and corneal topographer. Our evaluation of orthokeratology induced central corneal thickness changes, although showing no significant changes, will help in part to eventually achieve the ultimate goal of a systematic methodology for fitting orthokeratology lenses.
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