Mosquito eye can be caused by physiological factors, can also be caused by uveitis, retinal detachment and other pathologic factors, can be taken to the general treatment, dexamethasone eye drops and other medications, as well as surgical treatment and so on to improve. 1. Physiological factors: vitreous liquefaction and degeneration of vitreous body occurs with the change of age, which cannot be prevented, and this situation belongs to physiological factors. This is a physiological factor. Especially in the elderly, after further vitreous liquefaction, it is easy to separate from the retina, forming a vitreous detachment, and mosquito fly. In general, the more stable mosquito can not need treatment, observation can be. 2. Uveitis: can cause obvious mosquito, usually pay attention to hand hygiene, eye protection, avoid trauma is conducive to prevention. Treatment can mainly take dexamethasone eye drops and other glucocorticoids and ibuprofen and other non-steroidal drugs, and at the same time to actively control the primary disease, such as hypertension, diabetes and so on. 3. Retinal detachment: Flying mosquitoes may appear, and there may also be a sense of flashing light, black shadow blocking and so on. Protecting the eyes and avoiding eye trauma is good for prevention, while regular eye examination is good for early detection of the problem. When retinal tears or even retinal detachment are found, laser treatment or surgery is usually needed. There may also be other causes, such as high blood pressure, etc. It is recommended to consult a doctor in time to find out the cause and treat the cause of the problem, and follow the doctor’s instructions for the above medications.