Orthokeratology (also known as OrthoK, OK, corneal reshaping, corneal refractive therapy, CRT, and vision shaping treatment) is a non-surgical method to correct vision using custom-designed rigid lenses. These lenses are worn overnight to gently and temporarily modify the curvature of cornea. Modern Ortho-K lenses are made of breathable rigid lens materials to allow for safe overnight wear. When cared for and cleaned properly, the risk of infection is less than 1%.
Mission Eye Care in Calgary is the only clinic in Canada that has 2 optometrists residency trained in fitting all types of custom specialty contact lenses – including Orthokeratology for myopia control.