Flashing eyes or some bright spots in front of the eyes are usually seen in fundus diseases, the more common diseases include vitreous turbidity, vitreous degeneration, retinal fissure, retinal detachment, all these diseases may lead to the appearance of this symptom. So once this performance occurs, you need to go to the hospital as soon as possible to improve the examination of the fundus. For vitreous clouding, it depends on whether it is physiological clouding or pathological clouding, physiological clouding, also known as mosquito flying, is not treated and does not affect vision. For pathological vitreous opacity or vitreous degeneration, vitrectomy can be performed, and for retinal fissures, retinal laser photocoagulation can be performed to close the fissures. If the retinal detachment is relatively serious, retinal detachment repositioning surgery should be performed as soon as possible to avoid more serious impact on visual function.