Orthokeratology, also known as Ortho-K, involves the use of custom-fitted gas-permeable contact lenses to reshape the cornea in order to improve vision. Ortho-K is most commonly done to correct nearsightedness (myopia), and a small amount of astigmatism.

How Does Ortho-K Work?

Ortho-k treatment begins with your eye care specialist mapping out and measuring the surface of your cornea with a corneal topographer. Your eye care specialist can then design a lens that is specifically fitted to the outer surface of your eye (i.e. the cornea).

These custom-lenses are worn overnight. Ortho-k lenses work by flattening the center of the cornea, changing how light is bent as it enters the eye. Being rigid and gas permeable, these lenses are effective at reshaping the cornea, while allowing oxygen flow to maintain eye health.

While undergoing Orthokeratology, you can expect to see better, without the need for day-time glasses or contact lenses, for a day or two. For best results, Ortho-K lenses should be worn every night, to achieve sustained vision improvement, and are typically replaced on an annual basis.

Learn more about Orthokeratology by watching this video:

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 change the curvature of the cornea while you sleep. Upon waking, the lenses are removed and distant objects come into focus with the reshaped cornea. Patients can see clearly without the use of glasses or contact lenses during daytime hours.

I am ready, what's the next step?

Getting a comprehensive eye exam is the first step to having your vision corrected. During your eye exam, your optometrist will determine if Ortho-K may be a suitable option for you and may recommend further testing or a more suitable therapy.

The FDA has declared Ortho-K lenses 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 other types of contact lens correction, which is to say, very small.

Ortho-K is used to treat and sometimes even eliminate conditions such as myopia and astigmatism. It is appropriate for all ages. In fact, today, Ortho-k is one of the most effective methods of slowing down progressive myopia in children. We use an OCT to assess corneal shape (tomography), lens fit, and treatment effect with sequential axial length measurement and tomography.
Schedule a comprehensive eye exam with Dr. Sciberras today, to get started on your journey to clear and comfortable vision without the need for day-time vision correction. To learn more about Ortho-k, and all other available options, schedule your appointment now.