Myopia Management
Orthokeratology.
Custom overnight lenses that gently reshape the cornea — delivering clear, unaided daytime vision while slowing the progression of myopia in children and teens.
The Science
How orthokeratology works.
Corneal mapping
We begin with a detailed topographic map of your child's corneal surface using advanced imaging technology. This data drives the precise design of their custom lenses.
Overnight reshaping
The rigid gas-permeable lenses are worn only during sleep. They apply gentle, controlled pressure to the central cornea, temporarily flattening it and correcting the refractive error.
Clear daytime vision
After removal each morning, the reshaped cornea focuses light correctly on the retina — providing clear, unaided vision throughout the day without glasses or contact lenses.
Slowed axial elongation
The peripheral defocus created by ortho-k lenses signals the eye to slow its growth. This reduction in axial elongation is the primary mechanism behind myopia control.
Myopia — what's happening in the eye
Candidacy
Is my child a suitable candidate?
Ideal candidates
When ortho-k may not be suitable
Not sure if your child qualifies? A comprehensive assessment will determine suitability and explore alternative myopia management options if ortho-k isn't the right fit.
Book an assessmentThe Process
What to expect at each stage.
Initial consultation
Comprehensive eye exam, corneal topography, and myopia assessment. We determine suitability and discuss the treatment plan with you and your child.
Lens fitting
Custom lenses are ordered and fitted. We provide full training on insertion, removal, and cleaning. Your child wears the lenses for the first time at home.
Follow-up review
We assess corneal response, vision quality, and lens fit. Adjustments are made if needed. Most children report clear vision by this point.
Ongoing monitoring
Regular check-ups track myopia progression, corneal health, and lens condition. Lenses are typically replaced annually or as your child's prescription changes.
FAQs
Common questions about ortho-k.
Is orthokeratology safe for children?
Yes. Orthokeratology has been used safely for over 40 years and is approved for use in children. Studies consistently show it is safe when lenses are properly fitted and hygiene protocols are followed. The risk of serious complications is comparable to standard soft contact lens wear.
At what age can my child start ortho-k?
Most children aged 6 and older are suitable candidates. There is no strict upper age limit — adults with stable myopia can also benefit. The ideal time to start is when myopia is first detected and still progressing.
How quickly will my child see results?
Many children experience significantly improved vision after the first night of wear. Full correction typically stabilises within 1–2 weeks as the cornea adapts to the new shape.
What happens if my child stops wearing the lenses?
Orthokeratology is reversible. If lens wear is discontinued, the cornea gradually returns to its original shape over a few days and the original prescription returns. The myopia-slowing effect also ceases, so consistent nightly wear is important.
How does ortho-k compare to glasses or soft lenses for myopia control?
Clinical evidence shows orthokeratology is one of the most effective methods for slowing myopia progression — reducing axial elongation by approximately 40–60% compared to single-vision glasses. Myopia control soft lenses (such as MiSight) offer similar benefits and may suit children who prefer daytime lens wear.
Will my child need to wear anything during the day?
No — that is one of the key advantages of ortho-k. After wearing the lenses overnight, most children have clear, unaided vision throughout the entire day. No glasses, no daytime contact lenses.
How often does my child need check-ups?
We recommend follow-up appointments at 1 week, 1 month, and then every 6 months. Regular monitoring allows us to track myopia progression, assess corneal health, and adjust the treatment plan as your child grows.
Are the lenses uncomfortable to sleep in?
Most children adapt quickly. The lenses are rigid gas-permeable, which means they allow excellent oxygen flow to the cornea. An initial adaptation period of 1–2 weeks is normal, after which the majority of wearers report no discomfort.
Take the First Step
Ready to explore orthokeratology for your child?
Book a specialist assessment in Cape Town. We'll map your child's corneas, assess their myopia, and determine whether ortho-k is the right treatment — with no pressure and full transparency.