Orthokeratology

Orthokeratology (Ortho-K)

What Is Ortho-K?

Ortho-K is a non-surgical vision correction method that involves wearing specially designed gas-permeable contact lenses overnight to reshape the cornea. This allows clear vision during the day without glasses or contact lenses.

Benefits of Ortho-K

  • Myopia Control – Proven to slow down myopia progression in children
  • Daytime Spectacle-Free Vision – Ideal for sports and outdoor activities
  • Alternative to LASIK – Non-invasive and reversible
  • Dry Rye-Friendly – Unlike soft contact lenses, Ortho-K does not worsen dry eyes

Who Is Suitable for Ortho-K?

  • Children aged 6 and above
  • Myopia less than -9.00D and astigmatism less than -3.00D
  • Children with rapidly progressing myopia
  • Active individuals involved in sports, swimming, or water activities
  • Individuals not suitable for LASIK surgery
  • People with dry eyes who struggle with soft contact lenses

Pros & Cons of Ortho-K

Pros:

  • Clear vision without daytime glasses or contact lenses
  • Effective in slowing myopia progression
  • Avoids dry eye discomfort caused by soft lenses
  • Non-invasive and reversible

Cons:

  • Not a permanent cure—vision returns if lenses are discontinued
  • Regular follow-ups are necessary for safety and effectiveness
  • Requires strict compliance to avoid infection risks

Scientific Evidence for Ortho-K

A two-year study in Japan (2011) with 92 myopic children found that those who wore Ortho-K lenses had significantly less eyeball elongation compared to those wearing glasses. This suggests that Ortho-K reduces the risk of myopia progression.