Ortho-K Lenses: 15 Frequently Asked Questions

Orthokeratology (Ortho-K) is a safe and reversible method of vision correction that works while you sleep, providing clear vision without glasses or daytime contact lenses.

At Optometrist Parramatta, we regularly prescribe Ortho-K (also known as dream lenses) as part of myopia management in children and teenagers. They provide clear daytime vision while also helping to slow the progression of short-sightedness.

Let’s explore some of the most common questions parents ask when considering Ortho-K for their child.

Ortho-K Lenses: Q&A

1. What is Ortho-K?

Orthokeratology involves wearing specially designed rigid gas-permeable contact lenses overnight to gently reshape the cornea (the clear front surface of the eye). This temporary reshaping allows light to focus correctly on the retina, giving clear vision that lasts throughout the day.

2. What are the possible risks?

As with all contact lens wear, there are potential risks. Side-effects can include irritation, redness, corneal staining, lens binding, dryness and blurred vision. In rare cases, corneal infection or scarring can occur. Careful fitting, proper hygiene, and regular follow-up visits greatly reduce these risks. Our optometrists will explain how to properly insert and care for your lenses when you are provided with your trial lenses.

3. What ages are suitable for Ortho-K?

Ortho-K can be fitted from around age 6. It’s particularly beneficial for children and adolescents with progressing myopia, as research shows it can help slow its advancement.

4. How effective is Ortho-K for myopia control?

Studies show Ortho-K can reduce the rate of myopia progression in children by about 50% on average. The degree of benefit varies between individuals, but younger children tend to respond especially well.

5. Can Ortho-K correct other conditions besides myopia?

While most commonly used for myopia, Ortho-K can also help with certain cases of astigmatism and early hyperopia. Suitability depends on your child’s prescription and corneal shape.

6. What about children with dry eyes?

Some children who find daytime contact lenses uncomfortable may do better with Ortho-K, since the lenses are worn only while sleeping. Suitability depends on the type and severity of dry eye, so assessment is important.

7. How quickly does Ortho-K work?

Most children notice clearer vision within a few days. Full correction usually takes 1–2 weeks, though for higher prescriptions it may take up to 4–6 weeks.

8. How long do the effects last?

Clear vision usually lasts between 24 and 72 hours after lens removal. Most children need to wear their lenses every night for stable results.

9. What if my child forgets to wear their lenses?

Missing a night usually means vision is still functional the next day, though it may not be as sharp. Consistent wear is recommended for best results.

10. Are the lenses comfortable?

Because they are worn during sleep, awareness is minimal. There may be initial discomfort; however, most children adapt within a few nights.

11. Can my child see while the lenses are in?

Vision is generally clear with the lenses in, however, they are designed to be worn during sleep, not for daytime use.

12. Why might Ortho-K not work for some children?

Ortho-K works best when the front surface of the eye (the cornea) has a smooth, regular shape. Ortho-K is not suitable if the cornea is irregular due to conditions such as keratoconus or scarring.  

13. How do we care for the lenses, and how often are they replaced?

Ortho-K lenses must be cleaned and disinfected using a special cleaning system provided by your optometrist. This system keeps the lenses safe and comfortable to wear.

We usually replace Ortho-K lenses every 12 months, although this may vary depending on lens condition and your child’s needs.

14. Is Ortho-K permanent?

No. The effects last only while the lenses are worn consistently. If treatment is stopped, the cornea gradually returns to its original shape and prescription.

15. How do I know if Ortho-K is suitable for my child?

Our optometrists screen for suitability for Ortho-K and other vision correction solutions during our comprehensive eye tests.

If you’d like to find out whether Ortho-K is suitable for your child, we’d be happy to assess and guide you through the process.

Get started by booking an appointment today.