How common are eye infections from contacts?

Uncommon: Contacts when worn according to directions rarely cause infection. The major mistake made is to not remove the lenses when the eye becomes red to any degree. When there is an infection with a contact, the eyes get very red and light sensitive and may also lose (temporarily) vision depending upon the location and degree of infection. See your ophthalmologist for treatment.

Infection with CTL: Infections associated with contact lenses are uncommon if proper hygiene is utilized. Bacterial infections are by far the most common though. Pseudomonas, staphylococcal species are the most common.