TIL that certain types of contact lenses worn only during sleep reshape your cornea. After taking them out in the morning, your vision is as good as it would be while normally wearing contacts or glasses. Studies also suggest the lenses slow or stop myopic progression in children.

http://en.m.wikipedia.org/wiki/Orthokeratology



Submitted March 13, 2015 at 08:45PM by gothsim http://www.reddit.com/r/todayilearned/comments/2yx0q3/til_that_certain_types_of_contact_lenses_worn/