What is the frequency of corneal ulcer among people who wear contacts?

Increased : The annual rate of corneal ulcers related to contact lens use is 0.04% (4/10, 000) with daily wear lenses, and 0.21% (21/10, 000) with extended wear lenses. If you sleep in our lenses, no matter what brand, you are at 40 times greater risk of serious corneal ulcer. Patient can get corneal barasion, feels like sand in the eye. Corneal ulcer usually feels the same but with more pain.