The History and Impact of Prescribing Orthokeratology for Slowing Myopia Progression.

Abstract: This paper discusses the history and impact of orthokeratology on slowing the progression of myopia. It discusses the origins and evolution of orthokeratology from polymethymethaccrylate lenses worn during the day to its current prescribing of highly permeable, innovative reverse-geometry designs worn only while sleeping. Technological advances in corneal topography, lens design, lens materials, and manufacturing have facilitated growth of orthokeratology to a precise and predictable procedure. More recently, significant interest in orthokeratology has been stimulated by its efficacy in slowing axial elongation in myopic children. Safety of children wearing contact lenses while sleeping has been an ongoing concern. The potential of serious complications exists, but long-term studies and clinical experience have shown that risks of those events can be minimized with strict compliance with lens cleaning, disinfection, and hand hygiene. Because no correction is required during waking hours, patients using orthokeratology report higher vision-related quality of life, less activity restrictions, and more comfortable eyes compared with spectacles or contact lenses worn during the day. The future growth of orthokeratology will be fueled by the prescribing of orthokeratology as a modality to slow axial elongation and an alternative modality to spectacles, traditional contact lenses, and refractive surgery to correct refractive error.