2005 Hun. 646:961-2. Patients who have A with scleritis and a corneal melt die within 5 years without aggressive treatment. Central ulcers are typically caused by trauma, dry eye, or exposure from facial nerve paralysis or exophthalmos . Symptoms of corneal ulcers include: Grey-white area on the clear cornea Seek medical advice if you suspect you have a corneal ulcer. Depending on the age of the person, the health care provider may also check the pressure within the eye. It also might hurt to look at any bright lights. Klebsiella pneumonia mucoid phenotype and its ability to form biofilm may be important in producing a corneal ulceration. Commonly isolated bacteria include Staphylococcus, Streptococcus and Pseudomonas, and empirical antimicrobial therapy should be effective against these bacteria. Medline . Some horses will rub their eyes in response to pain, and this can cause further corneal damage.

Also it can be caused by corona viruses & many other viruses. Peripheral ulcerative keratitis. Although corneal ulcers are treatable, and most people recover quite well after treatment, a reduction in eyesight may occur.  “Atropine and many other ophthalmic medications have a very bitter taste, which may cause drooling...” Goldberg D, Negvesky DJ, Butrus AI, et al. Never use saliva to lubricate your lenses because your mouth contains bacteria that can harm your cornea.

Corneal ulcer