What is Orthokeratology (Ortho-k)
Orthokeratology is a process that uses specially designed GP contact lenses to temporarily reshape the contour of the cornea to reduce myopia (nearsightedness).
Orthokeratology is nicknamed "ortho-k" and sometimes called corneal reshaping (CR), corneal refractive therapy or vision shaping.
Some new ortho-k lens designs are also available for farsightedness and presbyopia. Research has also demonstrated that orthokeratology lens designs slow the progression of myopia.
Good candidates for orthokeratology:
Age 5 to 12 with progressive myopia
The Orthokeratology Process
If your eye care professional feels you are a good candidate for orthokeratology, you will wear specially designed GP lenses at night only. In the one- to two-week treatment phase, your nearsightedness is gradually reduced. Since your vision will be changing, you'll need to wear disposable soft lenses during the day.
After completed treatment:
You will need to see your eye care professional regularly to ensure your lenses are fitting well and your eyes are healthy.
Since during sleep the lenses fit tightly on the eye, it's especially important to clean and disinfect the lenses upon removal each morning.
Studies have found that these specially designed ortho-k lenses can reduce existing myopia when worn overnight.
As young people are very active athletically, this often allows them visual freedom to play sports without wearing eyeglasses or contacts.
In addition to the benefit of lens-free daytime vision, orthokeratology is starting to be appreciated for its ability to slow the progression of myopia