Orthokeratology | Ortho-K, or CRT, refers to the process of using gas permeable contact lenses to temporarily reshape the cornea to reduce refractive errors such as myopia, farsightedness and astigmatism. This method can be used as an alternative to eyeglasses, refractive surgery, or for those who prefer not to wear contact lenses during the day. Orthokeratology is most often used for candidates with up to -6.00 diopters of myopia.
Good candidates for orthokeratology include children ages 8 to 12 with progressive myopia (nearisghted), as well as most adolescents and adults. The best success is with people under age 40. Ortho-k is most recommended for low to mild nearsightedness (-4 diopters or less) but can treat up to -6 diopters.
People who are not good candidates include those with dry eye syndrome, a large pupil size, or high myopia (above -6 diopters).
If you are a good candidate for orthokeratology, we will be provided a specially designed set of GP lenses to wear at night only for one-two weeks. During the treatment phase, your nearsightedness is gradually reduced. Since your vision will be changing, you’ll need to wear disposable soft lenses during the day. Once the treatment period is over, you can reduce your nightly wear to once or twice per week. You should be able to see well during the day without any corrective lenses. Throughout the process, you will need to see your eye care professional regularly to ensure your lenses are fitting well and your eyes are healthy.
Please note that during sleep, contact lenses fit tightly on the eye. It is extremely important to clean and disinfect your Ortho-K lenses upon removal each morning.