Orthokeratology uses OCR lenses to reshape the cornea while you sleep – meaning sharp, clear vision all day without contact lenses or glasses.

OCR (Overnight Corneal Reshaping) lenses are special contact lenses that gently flatten the cornea to allow the eye to see clearly without correction. This is also known as Accelerated Orthokeratology (AOK). These lenses work to control myopia, mild astigmatism, hyperopia and presbyopia.


Myopia, also known as “near-sighted” or “short-sighted”, is a progressive visual disorder that results in poor distance vision. If the myopia is severe, it will impair near vision as well.  In addition to weakening vision, it also changes the physical structure of the eye. It can steepen the front surface of the eye (cornea) and/or stretch the retina (axial elongation). These changes increase the risk of future eye disease. It is one of the leading causes of blindness around the world and has a direct association with retinal detachments and glaucoma.

In the most basic of terms Overnight Corneal Reshaping or Orthokeratology is the science of changing the curvature or shape of the cornea to change how light is focused on the retina at the back of one’s eye. It has been demonstrated, within a ten year time frame, that fully 70% of all participants in a corneal reshaping control group did not progress in degree of myopia over the period studied.

Below are some topography charts of some of our Overnight Corneal Reshaping clients. Click on the images for a larger view.

Frequently Asked Questions

How does it work?

Overnight Corneal Reshaping uses rigid gas permeable contact lenses to flatten the cornea as you sleep. The lenses are then removed upon waking and you enjoy great vision all day without the need for glasses or contact lenses.

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What are the benefits of overnight corneal reshaping lenses?

There are three main benefits:

  • No glasses or contact lenses are needed during waking hours.
  • Studies show Overnight Corneal Reshaping lenses reduce nearsighted progression by 51% on average.
  • Axial growth (elongation) of the eye is 63% less with Overnight Corneal Reshaping lenses.

Results in our clinic have been very favorable. Dr. Loose has been fitting these lenses since 2000.

What are the associated costs?

Call the clinic to set up a consultation appointment

What OCR Clients Say?

“Wearing them at night is very convenient because most of the time I don’t even realize they are in. It is a lot better than day time contacts, because I don’t have to worry about them irritating my eyes during the day.”

Jenna B.

“My (OCR lenses) make my life/wearing contacts so much more convenient. I don’t have to worry about loose screws or fogged lenses on glasses, dry eyes during the day or lenses falling out.”

Sara G.

“Not wearing contacts during the day has been a blessing for an active person… the total freedom during the day has been ideal for a busy school student.”

Nadine K.

If you know your prescription you can order contact lenses online!

Schedule your next appointment using our online request form!