Orthokeratology (Ortho-K)
Overnight lenses that gently reshape the cornea while you sleep — providing clear daytime vision without glasses or contacts, and slowing myopia progression in children and teens.
Quick guidance
- If your child has myopia
- Ortho-K lenses can slow myopia progression by ~50% on average while providing clear daytime vision without glasses.
- If you want glasses-free days
- Wear the lenses overnight and remove them in the morning. No glasses or contact lenses needed during the day.
- If you are active in sports
- Ortho-K is especially popular with young athletes who need clear vision without the hassle of daytime lenses.
What is Ortho-K?
Ortho-K lenses are rigid gas permeable contact lenses that are worn overnight and allow for clear vision during waking hours without the need for spectacles or contact lenses. The lenses are meant to be worn every night and are specially designed for an individual's corneal shape and prescription to temporarily reshape the front surface of the eye to provide clear vision. The corneal molding is completely reversible.


Left: corneal topography before orthokeratology. Right: corneal topography after orthokeratology
Ortho-K and myopia control
Ortho-K lenses are widely used for the purpose of slowing the progression of myopia. Ortho-K lenses can slow the progression of myopia by, on average 50% in children, compared to those wearing single vision spectacles or contact lenses. Studies such as CRAYON looked at children between 8-15 years old and compared the myopia control effects between ortho-k lenses and single vision soft contact lenses. Children who wore ortho-k lenses for 2 years had less axial length growth compared to their peers wearing single vision contact lenses.
Orthokeratology fitting fee
$1,500
Includes lens fitting, design, and all follow-up visits necessary to optimise your fit. Lenses billed separately at $500/pair. Covered by most vision plans.
See eye exam prices and insurance and pricing FAQ for details.
What to do next
Ortho-K lets your child wake up with clear sight and fewer myopia risks — no surgery, no daytime lenses. Book an appointment and let us know you are interested in Ortho-K so we can assess candidacy.
Ready When You Are
We know life is busy. That's why we make it easy to get expert care — right here in the heart of downtown Toronto. Flexible appointments. Friendly team. No stress.