How safe is ortho-k? Is it permanent like laser eye surgery or LASIK?



Ortho K is an easy, safe, non-permanent and reversable alternative to enhance your lifestyle and correct your vision. Because orthokeratology is reversable, it is not permanent like refractive eye surgery or LASIK, making this process an ideal alternative for myopic clients, most suitably between the ages of 12 and 55 years old. By using ortho-k, you can avoid the hassle of wearing contact lenses during the day, and only wear them while you sleep.



  • Is it safe to sleep while wearing contact Lenses?

The rigid OrthoKeratology lenses are made from materials that allow sufficient oxygen permeability to make overnight wear safe. Unlike regular contact lenses, Ortho-K lenses enable the eyes to breathe even when the eyelids are closed. Anthony Liska chooses to use Paragon CRT lens which are approved by the United States FDA for overnight wear.

Contact lens corneal reshaping is not a new concept, and was started over 70 years ago. Modern technology makes ortho-k more accurate with safer lenses which are proven to work and are proven safe for overnight wear. That is why the FDA has approved the Paragon CRT lenses used by Anthony Liska.

Anthony Liska uses Paragon CRT lenses for orthok




Regular eye check up

  • How long do the OrthoK Lenses last?

We recommend that the lenses be replaced every twelve months to maintain hygiene and structural accuracy of your ortho-k lens.



As with all contact lenses, regular check-ups are important and are inclusive of our Client Care program which includes your custom fitting visits. The actual parameters of the orthokeratology contact lens need to be worked out extremely precisely for the correct change in surface power to occur.

This is why custom fitting can take a few visits to get the fitting exactly correct and these fitting costs are included in the total Ortho-K fee.



What is ortho-k?
Is ortho-k safe?
Client Care Program
Stop wearing glasses
Control myopia progression
Alternative to LASIK
Dry eye and contact lenses
About Anthony Liska
Contact Us
More ortho-k info