Orthokeratology (Ortho-K)

Orthokeratology (Ortho-K)

Contact Lenses

What is orthokeratology?

Orthokeratology (Ortho-K) involves wearing customized, rigid gas-permeable contact lenses, also known as corneal reshaping lenses, while you sleep. The lenses are designed to gently reshape the front surface of your eyes, or the cornea, so that you can see clearly once you wake up and remove the lenses. As a result, you can continue to go through your day without the need for glasses and contact lenses.

What vision problems can ortho-k correct?

Ortho-K lenses are typically used to correct myopia (nearsightedness) in adults and children, but can also be used to correct mild astigmatism and hyperopia in certain cases.

How long does it take to see the results of ortho-k?

The goal for ortho-k treatment is to correct your vision to at least 20/40 visual acuity or better without the assistance of glasses or contacts. Some patients may start to see clearer after a day or two of overnight ortho-k. However, for higher prescriptions, it may take up to two weeks or more for optimal correction.

How long does the ortho-k effect last after treatment?

After wearing the ortho-k lenses, you should be able to see clearly without the use of glasses or contact lenses for as long as a day or two. Some patients experience clearer vision for much longer.

Am I a candidate for ortho-k treatment?

Most patients with mild to moderate myopia (with or without mild astigmatism) are good candidates for ortho-k. Children and young adults who may be too young or ineligible for LASIK or refractive surgery are also eligible for ortho-k.

Ortho-K for Children?

While ortho-k is a great option for myopia correction inpatients of all ages, this technology is also used to control the progression of myopia in younger children, and thus helps to manage their vision as they get older. Additionally, ortho-k is great for children who are active and want the freedom to participate in their favorite activities without being limited by daily contact lens or glasses wear.
If you are nearsighted and interested in an alternative to glasses, contact lenses, and refractive surgery, ortho-k could be a solution for you. To find out if you would be a candidate for ortho-k treatment, call My Optometrist Calgary and we will help to schedule a consultation for you.


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  • Health First Optometry
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