How good would it be to be able to correct your vision while sleeping? Well for some prescriptions you are able to do just that.

Orthokeratology, commonly known as Ortho-K, or Corneal Reshaping Therapy (CRT) involves gently reshaping the front surface of the eye (cornea) to correct your distance vision, which eliminates the need to wear glasses or contact lenses during the day.

An Ortho-K lens is a contact lens made specifically for you and is worn at night.  The lens reshapes the cornea whilst you sleep so that when you wake up, you can remove the Ortho-K lens and you will be able to see clearly without the need for glasses or contact lenses.  Your vision will remain clear throughout the day, giving you freedom from having to wear glasses or contact lenses.