Everything parents need to know about orthokeratology for myopia control in children
Orthokeratology — commonly called Ortho-K — is a non-surgical, reversible vision correction method that uses specially designed rigid gas-permeable (RGP) contact lenses worn overnight. Unlike regular contact lenses you wear during the day, Ortho-K lenses gently reshape your child's cornea while they sleep, allowing them to see clearly the following day without glasses or daytime contacts.
The lenses are made from a highly oxygen-permeable material, meaning the cornea can "breathe" even while wearing the lens overnight. This makes them safe for overnight wear in children when properly fitted and monitored.
Originally developed for adults, Ortho-K has become increasingly popular for children because of its proven effectiveness at slowing myopia progression. Multiple clinical studies have demonstrated that Ortho-K can reduce the rate of myopia progression by approximately 40-60% compared to children who wear regular glasses or daytime contacts.
Ortho-K is the only myopia control method that also eliminates the need for glasses or daytime contact lenses. Your child wakes up and sees clearly — no lenses needed during the day.
Ortho-K lenses work through a principle called "corneal refractive therapy." The lens has a specially curved front surface that applies gentle pressure to the cornea, flattening it by a precisely calculated amount overnight. By morning, the cornea has been temporarily reshaped to compensate for the myopia error.
The effect is completely temporary — if your child stops wearing the lenses, their cornea gradually returns to its original shape over 1-2 weeks. This reversibility is one of the key advantages of Ortho-K over surgical alternatives.
The reshaping is precise enough to correct myopia up to approximately -6.00 dioptres and astigmatism up to -1.75 dioptres. Children outside these parameters may still benefit from Ortho-K with modified fitting approaches.
Getting Ortho-K lenses involves a multi-stage process designed to ensure the best possible outcome for your child:
Your optometrist will conduct a comprehensive eye examination including refraction, corneal mapping, and assessment of eye health. Not every child is a suitable candidate — the optometrist will discuss whether Ortho-K is the right choice for your child's specific situation.
A detailed map of your child's cornea is created using a specialised camera. This map is used to design the custom lens for your child's unique corneal shape. No two corneas are identical, which is why Ortho-K lenses must be individually prescribed.
Your child will try a diagnostic lens set to assess initial comfort and fit. Many children adjust to Ortho-K lenses quickly, though some may need a few nights to get used to the sensation.
Once the custom lenses arrive, your optometrist will teach your child how to insert, remove, and care for the lenses. This includes proper hand washing, lens insertion technique, and the cleaning routine. Most children can manage independently by age 10-12 with parental supervision.
Regular check-ups are essential: typically the morning after first use, then at 1 week, 1 month, and then every 3-6 months. These visits ensure the lenses are fitting correctly and the myopia control effect is maintained.
Ortho-K lenses must be fitted by a qualified optometrist experienced in corneal refractive therapy. Never purchase "online" Ortho-K lenses without professional supervision — improper use can lead to serious eye health issues including corneal infection.
Every child's response to Ortho-K is individual, but most children experience the following:
Day 1-3: Vision is noticeably improved but may fluctuate. Most children can see well enough for school by day 2-3.
Week 1-2: Stable, clear vision throughout waking hours. Glasses-free living begins.
Month 1+: Full myopia control effect maintained with nightly wear. Regular activities — sport, swimming, outdoor play — all without glasses.
The myopia control effect is sustained as long as the lenses are worn as prescribed. Research shows the effect is fully maintained with 6-8 hours of night wear on most nights.
Understanding the full cost of Ortho-K helps with financial planning. Here's what to expect:
Initial Fitting & First Lenses: $1,500 – $3,000 (varies by location and complexity)
Annual Reviews: $150 – $300 per visit
Lens Replacement: $300 – $500 per lens every 1-2 years
Solutions & Accessories: $20 – $40 per month
Compare this to progressive myopia without intervention: glasses that need updating every year, potential laser surgery in adulthood ($3,000-$6,000 per eye), and the ongoing quality-of-life impacts of high myopia. Many families find Ortho-K is a sound long-term investment.
Proper lens care is essential for eye health and lens longevity. The routine is simple once established:
Evening: Wash hands thoroughly, remove lenses, clean with recommended solution, store in fresh solution overnight.
Morning: Wash hands, remove lenses, rinse with saline or preservative-free drops, clean storage case, allow to air dry.
Weekly: Protein removal treatment (1-2 times per week using enzymatic cleaner)
Monthly: Replace lens case
Your optometrist will recommend specific products and provide full training during the fitting appointment.
Most optometrists recommend Ortho-K for children aged 7-8 and older, based on the child's maturity and ability to handle lenses responsibly. Some clinics treat younger children with parental handling.
Yes. Research involving thousands of children has shown Ortho-K is safe when fitted and monitored by a qualified optometrist. The key risks (infection) are minimised with proper hygiene and regular check-ups.
Your child can wear backup glasses while a replacement lens is ordered. Most clinics keep emergency spare lenses or can expedite orders within days.
This is one of the biggest advantages — during the day, no glasses or contact lenses are needed. Your child can swim, play sport, and enjoy all activities completely glasses-free.
A small percentage of children don't achieve satisfactory vision correction with Ortho-K. If the lenses aren't working after an adequate trial period, your optometrist will discuss alternative myopia control options.
Take our 2-minute assessment or book a consultation with a certified Ortho-K optometrist near you.
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