Orthokeratology (Ortho-K) / CRT
Orthokeratology, commonly called Ortho-K, is a non-surgical treatment designed to correct vision and slow the progression of nearsightedness (myopia).
We use CRT (Corneal Refractive Therapy) lenses made by Paragon Vision Sciences. CRT and Ortho-K are terms often used interchangeably.
How It Works
CRT lenses are specially designed rigid gas-permeable contact lenses worn overnight while you sleep.
During sleep, the lenses gently and temporarily reshape the surface of the cornea. In the morning, the lenses are removed — allowing for clear vision throughout the day without glasses or daytime contact lenses.
Myopia Control Benefits
Clinical studies show that orthokeratology can slow the progression of myopia by approximately 43–50% in children. In clinical practice, it has proven to be one of the most effective non-surgical options for managing nearsightedness.
Safety
As with any contact lens wear, there is a small risk of infection. However, the risk is comparable to other types of overnight contact lens wear and can be significantly reduced with proper hygiene, lens care, and regular follow-up visits.