Ortho K (orthokeratology) involves wearing specially designed Ortho-K lenses at night so you don’t have to wear eyeglasses during the day. These specialty contact lenses temporarily reshape your cornea while you sleep to correct mild to moderate refractive errors such as astigmatism, nearsightedness or farsightedness. In some cases, your Tampa optometrist may be able to use Ortho-K lenses to improve vision deficiencies due to presbyopia. In addition, orthokeratology may slow progression of nearsightedness in children.
How Do Ortho-K Lenses Work?
The pliability of corneal tissue allows customized Ortho K lenses to gently reshape the cornea so that light is properly focused on the retina. Your Tampa eye doctor will take measurements of your cornea’s curvature and create lenses that “float” on top of your eye fluids. However, enough pressure is placed on cornea to modify cornea tissue. The FDA has approved breathable gas-permeable (GP) lenses for orthokeratology purposes. GP contact lenses incorporate flexible elements such as silicon to facilitate oxygen flow to the cornea while you sleep. Unlike standard contact lenses worn during the day that require the act of blinking to pump tears under lenses, Ortho-K lenses do not need you to blink to maintain a healthy fluid content in your eyes.
Who are Good Candidates for Orthokeratology?
If you have been diagnosed with mild to moderate refractive errors and do not suffer from major eye diseases, you should be able to benefit from wearing Ortho K lenses. People interested in orthokeratology are those who do not want to wear glasses or contacts during the day, engage frequently in sports activities, may be too young for LASIK surgery or are searching for a more affordable alternative to LASIK.
Trials conducted by the U.S. FDA indicates nearly 70 percent of people wearing Ortho-K lenses achieve 20/20 vision while over 90 percent of Ortho-K patients achieve 20/40 vision or better.
To find out if orthokeratology is right for you, call your Lutz optometrist today at Visionary Eye Care to schedule an evaluation appointment: (813) 425-9596.