Orthokeratology, or ortho-k for short, literally means "the science of aligning the cornea." In ortho-k treatment, patients wear retainers (think of these like highly customized contact lenses) only while they sleep. These vision retainers gently reshape the front surface of the eye in a precisely controlled, completely non-surgical, totally reversible way. The result? Clear vision from the moment you open your eyes each day, with no need for daytime glasses, contact lenses, or surgery. Sounds too good to be true? Take our quiz to learn more, see if you qualify, AND receive a special offer at the end.