A girl’s sudden blindness may be related to optic nerve damage, glaucoma, fundopathy and other factors. 1. Damage to the optic nerve: when there is ischemia, inflammation or trauma to the optic nerve, it may cause damage to the optic nerve, and sudden blindness may occur. 2. Glaucoma: If you suffer from glaucoma, during acute attack, the intraocular pressure will easily rise sharply, which will damage the tissues inside the eye and cause visual function damage, and you may have the symptom of sudden blindness. And also accompanied by eye pain, headache and other uncomfortable symptoms. 3. fundus lesions: if the fundus occurs macular hemorrhage, retinal detachment and other fundus diseases, may also appear suddenly blind symptoms. Girls who are suddenly blind should go to the hospital in time for relevant examinations to clarify the cause of the disease and then follow the doctor’s instructions for treatment.