Damage to the cornea can cause significant eye irritation, such as loss of vision, pain in the eye, foreign body sensation, tearing, and photophobia. After these symptoms occur, it is important to go to the hospital for examination to clarify the specific injury. If the epithelial layer of the cornea is simply damaged, the recovery is still very fast. You can apply antibiotic drops and corneal repair medications to promote the healing of the corneal epithelium, which usually heals completely in about 24 hours and the symptoms disappear. If the injury is more severe, such as involving the stromal layer of the cornea, this situation should be taken seriously because the cornea itself has no nutrient vessels, so if it is not treated promptly, it is likely to lead to the occurrence of local infection, which can lead to vision loss. In this case, active topical anti-infective symptomatic treatment is required, and the recovery time is slow, usually around one month for gradual repair.