Wear it at night. See clearly all day.
Ortho-K is a rigid contact lens worn while you sleep. It gently reshapes the surface of the cornea overnight, so you can see without glasses or contact lenses during the day. In children it can also slow myopia.
Read the in-depth series →- Worn
- Overnight, removed on waking
- Suits
- Mild to moderate short-sightedness, some astigmatism
- Effect
- Temporary and reversible
- Also
- Slows myopia progression in children
Who it helps
Children with rising prescriptions
Clear vision at school without glasses, and slower myopia.
Swimmers and sport players
Nothing to wear or lose in the water or on the field.
Daytime lens discomfort
When soft lenses feel dry by the afternoon.
How ortho-K reshapes the cornea
Cross-section, five stepsEpithelium and tear layer drawn many times thicker than real. Not to scale. Myopia control →
What the fitting involves
Sequence / 04Suitability
Prescription, corneal health and a map of the corneal surface.
Design
Lenses made to order from your corneal map.
First nights
A check the morning after the first night, then over the following weeks.
Ongoing care
Regular reviews and strict lens hygiene keep the risk of infection low.
Want the detail? Read the full ortho-K series
In depth · 06 partsSix short, illustrated parts on how ortho-K actually works and how we design lenses for different eyes, from low myopia to early presbyopia.
How ortho-K works: fluid, not force
The tear film does the reshaping, which is why healthy tears matter.
Read →Part 02Freeform designs for a precise fit
A lens shaped for every direction of your cornea.
Read →Part 03Two-stage fitting for moderate myopia
Why a second, refined lens can sharpen the result.
Read →Part 04Small treatment zones for low myopia
Moving the myopia control ring inside the pupil.
Read →Part 05Trans-limbal fitting for higher prescriptions
Larger lenses for more correction and steadier centring.
Read →Part 06Hyperopic ortho-K for early presbyopia
Extending depth of focus to keep near vision in range.
Read →