Ortho-K (short for Orthokeratology) is a non-surgical procedure using specially designed contact lenses to gently reshape the curvature of the eye to improve vision.
Ortho-K (also known as OrthoK) is a treatment in which rigid gas permeable (RGP) contact lenses gently reshape the cornea (by flattening the curvature) hence reducing myopia (short sightedness). These custom lenses are worn overnight and removed upon waking. The overnight treatment will eliminate the need to wear any form of visual correction during the day (as long as the lenses are worn overnight). This therapy is sometimes compared to the use of braces to straighten teeth by orthodontists. Recent studies have also indicated that OrthoK can help control myopia progression. This treatement is particularly attractive as an alternative to laser surgery as, unlike LASIK or PRK, it is reversible by discontinuing wear.
Each patient must be assessed to confirm they are a suitable candidate. If you fit our criteria then a overnight trial lens with be dispensed. The next morning you will have your first aftercare visit to check your progress (your initial lens may be altered at this stage). Once the correct lens parameters are established, your customize night lenses will be dispensed. You will then be monitored regular for lens effectiveness and eye health. (Aftercare’s are usually after the first overnight wear, then after 7 days, 30 days, 3 months and 6 months).
The risks of Ortho-K are no different to the risks involved in regular contact lens wear. Remember that if you decide to cease this treatment, your vision will return to your previous prescription.
Ortho-k has been around for over 30 years, however not as successful as today due to a lack of contact lens materials and instrumentation. Improvements in contact lens materials (allowing safe overnight wear), accuracy of lens manufacture with specialised computer driven lathes and sophisticated corneal mapping instrumentation lend to Ortho-K being more predictable and acheiving better results.
A detailed assessment is neccessary, however the most suited candidates are :