Flying mosquitoes may be caused by vitreous clouding, vitreous clouding is divided into physiological vitreous clouding and pathological vitreous clouding, most of the flying mosquitoes are caused by physiological vitreous clouding, usually due to age and myopia deepening relationship, both will lead to vitreous degeneration, will make the transparent vitreous and become opaque vitreous, and then produce the phenomenon of flying mosquitoes, clinically Also known as flying mosquitoes. Usually mosquitoes do not need to deal with, and there is no good way to deal with, clinical observation is the main, regular follow-up can be. However, if the presence of mosquitoes significantly affects vision, it is also necessary to exclude the cause of pathological vitreous opacities. If there is bleeding, inflammatory reaction or intraocular immune response, will also cause the phenomenon of flying mosquitoes, but this belongs to the pathological vitreous turbidity, need to actively deal with can, most may need surgery to solve this kind of flying mosquitoes problem.