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Orthokeratology

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.

Diagram showing the progressive effect of orthokeratology: from a natural eye shape with no lens, to fitting an Ortho-K lens, followed by overnight corneal reshaping, and finally clear vision during the day with the lens removed.
Side-by-side corneal topography maps showing the eye's surface before and after orthokeratology treatment. The left map shows irregular corneal shape in red tones, while the right map shows a smoother, more uniform shape in blue tones after overnight Ortho-K lens wear.

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.

Book an appointment with us to assess your candidacy. Orthokeratology Lens Fitting Cost: $1500, inclusive of all follow-up visits necessary to optimise your fit. Orthokeratology Lens Cost: $500 for 1 pair.

Sleep Your Way to Better Vision

Ortho-K lets your child wake up with clear sight and fewer myopia risks — no surgery, no daytime lenses. Our team will help you determine if it's the right fit.