Scratching the surface of the cornea can be quite painful as the cornea is the most sensitive part of you body. It often causes pain, sensitivity to light and watery eyes. Treatment usually consists of prophylactic antibiotics, steroids, lubricants and bandage contact lenses if the abrasion is large enough. Sometimes the cornea has trouble healing and leads to recurrent corneal erosions as the epithelial surface sloughs off, exposing corneal nerves. In these cases, oral medications like doxycycline can help the epithelium stick to the cornea better and sometimes even surgeries like microstromal puncture are needed.
