Whether viral keratitis is serious or not depends on the location, shape and depth of the lesions. Generally, centralized, discoid and deeper ones are more serious, while peripheral zones and small and superficial lesions are less serious. Viral keratitis is a common type of keratitis, mainly caused by herpes simplex virus, according to the different shapes, it can be divided into punctate, dendritic, disk keratitis, the lesions are multiple. If the lesions are located in the central area, discoid, and deeply infiltrated, the patient’s condition is more serious, which can significantly affect the patient’s vision and even lead to blindness. If the foci of keratitis are located in the periphery, the foci are small and shallow infiltration, then the patient’s condition is relatively mild, and the patient’s condition can usually be recovered after timely treatment. It is recommended that patients with viral keratitis seek prompt medical attention to assess their condition and follow the doctor’s instructions for treatment.