Orthokeratology or “correction through corneal reshaping” is a principle that allows clear vision throughout the day without wearing contact lenses or glasses, thanks to lenses that are worn during the night.
Some people are able to get rid of their corrective lenses after a single night of treatment. However, if you or your child has a strong prescription, it may take a few days or two to three weeks for optimal results.
Ortho-k lenses are uncomfortable at first. They don’t hurt, but you won’t forget that you’re wearing lenses like you might with a daily disposable soft lens.
Generally speaking, the Orthokeratology lenses will have to be replaced every one to three years, depending on wear and tear. However, depending on other factors, such as protein buildup, or how well the lenses are taken care of, etc., the lenses may have to be replaced more or less frequently