ABC News explains that "orthokeratology is a new procedure in which visually impaired patients wear specially designed contact lenses while they sleep. The lenses correct distance vision by molding the cornea into the proper shape. Once the contacts are removed, the improved eyesight lasts eight to 20 hours. Doctors create the contacts by using a machine that measures as many as 15,000 points on the cornea so that each new lens can be customized with precision, and then worn overnight. A Food and Drug Administration panel recently recommended approval of these new lenses and a final decision is expected later this year." Read more.
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