Orthokeratology, more appropriately known as Ortho-K, is a revolutionary, non-surgical vision correction technique that involves using specially designed gas-permeable contact lenses to modify the shape of the cornea during sleep. By making small changes to the shape of the eye while sleeping, Ortho-K lenses provide daytime vision without glasses or daytime contact lenses. https://drrahulraghav.com/ortho-k-contact-lenses/