Keratitis

Keratitis is divided into ulcerative keratitis, also known as corneal ulcer, and non-ulcerative keratitis, namely deep keratitis. It is caused by internal factors and external factors. Inflammation caused by corneal trauma, bacteria and viruses invading the cornea. The affected eye has a foreign body sensation, tingling or even burning sensation. Mixed congestion on the surface of the bulbar conjunctiva with symptoms of photophobia, tearing, visual impairment, and increased secretions. The surface of the cornea is infiltrated with ulcers. Ulcerative keratitis, also known as corneal ulcer, is mostly caused by external factors, that is, inflammation caused by infectious pathogenic factors invading the corneal epithelial cell layer.