White light flashes in the eyes may be caused by fundus diseases, such as vitreous clouding, retinal degeneration, fundus vascular obstruction, etc., resulting in retinal pulling, which usually can be healed after treatment. Vitreous clouding or vitreous liquefaction will pull on the retina and briefly stimulate the retinal photoreceptor cells, resulting in white light flashes. Most people recover completely after a few moments of rest, but they are prone to recurrence and vision is usually unaffected. Fundus photography, to clarify whether retinal degeneration, retinoschisis lesions, direct interference with the function of photoreceptor cells, resulting in white light flashes, usually choose glucocorticoid, such as dexamethasone treatment, or laser treatment of retinopathy, the symptoms will be improved. Retinal arteriovenous occlusion may lead to insufficient blood supply to the retina and impaired photoreceptor cell function, which is manifested as flashing white light in the eyes, and in severe cases, vision loss. The main treatment is to address the cause of the disease, and the symptoms will improve after improving the blood supply to the retina by using medication or surgical treatment. It is recommended to go to the hospital to check the fundus of the eye to determine the cause of the flashing white light, and then treat the cause of the flashing white light.