Orthokeratology (also referred to as Corneal Refractive Therapy, or Corneal Reshaping) is a sophisticated non-surgical process using specially designed contact lenses to gently reshape the cornea (the front layer of the eye) while you sleep. When you wake up, you remove the lenses and are able to go throughout the day without the use of glasses or contact lenses.
The orthokeratology rigid gas permeable (RGP) lens redistributes the superficial cells of the corneal epithelium to flatten or reshape the cornea, allowing light that once focused in the front of the retina to now focus on the retina. The lenses are worn during sleep, and are removed upon wakening. Unlike laser surgery, orthokeratology is not permanent and is completely reversible. If you stop wearing the lenses, your vision will return to its original state in as little as 72 hours.
Orthokeratology is designed for people with low to moderate amounts of nearsightedness. It is FDA approved for patients with refractive errors up to -6.00 diopters, and with regular astigmatism up to -1.75 diopters. Patients who have corneal diseases or irregular corneal shape, or who have amblyopia, lazy eye, or vision only in one eye, are not good candidates.
Unlike laser refractive surgery, there are no age restrictions for orthokeratology. Orthokeratology can be a great option for adolescents and teenagers who want to see well and have the freedom of not wearing glasses and contact lenses during the day. It is ideal for people who have active lifestyles or play sports.
More information on Orthokeratology.