Generally keratitis is not life-threatening, but it can be harmful to the patient’s vision. Keratitis is an inflammation caused by exogenous or endogenous pathogenic factors attacking the corneal tissue when the corneal defenses are weakened, and patients may experience eye pain, photophobia, tearing, blepharospasm, and other symptoms of eye irritation. Localized inflammation of the eye is generally not life-threatening, but can affect the patient’s vision to varying degrees. In the early stages of keratitis, the disease is usually limited to some layers of the cornea and can progress without effective treatment, causing irreversible vision damage in the later stages. When patients do not receive effective treatment or when symptoms are severe, there may be complications, such as corneal ulcers, secondary glaucoma, etc., and chronic keratitis can also be formed after prolonged treatment. It is recommended that patients with keratitis consult a hospital in a timely manner to assess their condition and follow the doctor’s instructions for treatment to avoid delays.