Orthokeratology, also known as ortho-k, involves the use of specially fitted gas permeable contact lenses to temporarily reshape the cornea in order to improve vision. Ortho-k is most commonly done to temporarily correct nearsightedness (myopia), but can also be used to correct astigmatism, farsightedness and presbyopia.
How does Orthokeratology work?
Ortho-k treatment begins with your eye care specialist mapping out and measuring the surface of your cornea using an painless instrument called a corneal topographer. Using this, your eye care specialist can then design a lens that’s specifically fitted to your eye.
These specifically fitted and custom designed lenses are then typically worn overnight. Ortho-k lenses work by flattening the center of the cornea, changing how light is bent as it enters the eye. Being gas permeable, these lenses are effective at reshaping the cornea, while letting oxygen in to maintain eye health.
While undergoing orthokeratology treatment, you can expect to see better, without glasses or contact lenses, for a day or two. For best results, ortho-k lenses can be worn every night, to achieve sustained vision improvement.
Learn more about Orthokeratology by watching the video below.
Corneal Refractive Therapy
Corneal Refractive Therapy (CRT) is a proprietary lens design and fitting methodology developed by Paragon Vision Sciences.
Paragon CRT lenses are worn overnight and work to gently correct the curvature of the cornea while you sleep. When removed in the morning, distant objects will come back into focus and patients can see clearly without the use of glasses or daytime contacts.
What else should I know about Ortho-k?
Getting a comprehensive eye exam is the first step to getting your vision properly evaluated. During your eye exam, your optometrist will be able to assess whether ortho-k may be a suitable option for you, and may recommend further testing or treatment.
The FDA has declared that ortho-k lenses are safe for use by people of many ages, including young children and adults – as long as the specialized contact lenses are made from certain highly gas-permeable materials. The risks of ortho-k are very similar to the risks of wearing any type of contact lens.
With his strong focus on patient education, Dr. Sciberras is pleased to guide his patients through understanding their current eye condition and providing best available treatment options.