64 years old to see things flash feeling, may be due to mosquito, retinal crack, uveitis and other diseases. 1. Aedes aegypti: usually physiological aedes aegypti is due to vitreous age-related changes, if pathological aedes aegypti, may be due to retinal tear, vitreous blood, endophthalmitis and other factors. Generally, patients with pathologic Aedes aegypti will suddenly have black shadows in front of their eyes, and some of them will also have abnormal flashes of light, which can lead to a flashing sensation of seeing things. 2. Retinal tear: usually due to vitreous degeneration, vitreous detachment, retinal degeneration and other conditions, and also associated with strenuous exercise, retinal vascular disease and other factors. Patients have no obvious symptoms in the early stage, with the aggravation of vitreous liquefaction, but also in a fixed position to appear a continuous flash of sensation, some patients can also be manifested as a sense of smoke in front of the eyes, black shadow fluttering, and so on. 3. Uveitis: the etiology is more complex, mostly considered autoimmune diseases, infections, mechanical injuries and other conditions, and with mental stress, overwork and other factors. Early patients with uveitis are mostly asymptomatic or only manifested in front of the eyes flashing sensation, with the development of the disease, but also in the center of the field of vision out of the reality of the dark spot. The 64-year-old patient to see things flash feeling, should be timely medical treatment, find the cause of the disease after active treatment.