Orthokeratology: The Basic Design7:00 AM
Orthokeratology contact lenses reshape the cornea overnight to provide clear vision during the day without the need for contact lenses or glasses during those daytime hours. These specialty contact lenses can be great for children, athletes, or those with jobs or lifestyles that make glasses or contact lens wear very difficult. As a practitioner, prescribing these contact lenses involves much more technical skill than the average contact lens, and adjusting the lens for better vision and fit requires a working knowledge of different parts of the design that are completely unique to orthokeratology lenses. These lenses employ a large reverse curve change, where the central part of the lens bears down on the cornea while the mid peripheral region of the lens vaults back up to align the contact lens properly on the eye. Today's post breaks down the basic design of orthokeratology contact lenses, and to help determine what parameters need to be changed to achieve that best fit for maximum lens performance and next day clarity!
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