What are the symptoms of chronic keratitis?

Chronic keratitis is a chronic inflammatory response of the cornea caused by reduced corneal defense capacity and prolonged invasion of external pathogens or underlying diseases. Its main symptoms include: 1. Eye pain: Due to inflammatory stimulation, patients experience significant ocular pain, which may be accompanied by stabbing or burning sensations, typically located in the center of the eye. 2. Photophobia: The cornea has abundant nerve endings; inflammation can lead to sensitivity and fear of bright light. 3. Tearing: Ocular inflammation disrupts normal tear secretion, resulting in excessive tearing. 4. Decreased vision: Chronic keratitis may cause corneal opacity or corneal ulcers, impairing light refraction and leading to visual decline. If left untreated, it may damage the optic nerve and further reduce vision. 5. Other manifestations: Patients may also develop eyelid spasms and increased eye discharge. In severe cases, purulent keratitis may develop, characterized by pus-like secretions. These symptoms may persist over time. If any related symptoms occur, prompt medical attention is recommended.