You can fix your vision while you sleep. Orthokeratology lenses reshape your corneas overnight so you don’t need corrective lenses when you’re awake. When you remove them in the morning, you can see just as clearly as you would with prescription lenses.
The lenses can by worn whether you’re nearsighted, farsighted, or have small amounts of astigmatism. They also help slow the progression of nearsightedness in children.