Ortho-K works somewhat similarly to a retainer for teeth in that they are worn overnight, but the similarities stop there. Ortho-K works by gently reshaping the front surface of the eye (the cornea) while you sleep. The retainer lenses are inserted right before bedtime and removed after waking. Because the lenses are designed to correct your vision overnight, you will wake up with vision that will remain clear throughout your waking hours. The lenses are then re-worn nightly to maintain clear vision.
Recent advances in technology have allowed us to design Ortho-K lenses that are created 100% from the shape of your eye. The custom nature of the lens allows for a healthier fitment. Additionally, custom lenses work more quickly and will allow you to reach a clear endpoint in a shorter time period
To learn about the safety profile of Ortho-K, continue reading here.