Floaters: generally caused by vitreous degeneration, is a natural aging phenomenon, that is, as we age, the vitreous body will “liquefy”, producing some cloudy material. Therefore, the official name of mosquito flying disease is “vitreous chaos” or “vitreous floaters”. See the black point flying in front of the eye, as if flying mosquitoes so named. Flying mosquitoes is intravitreous opaque objects projected on the retina produced. In bright light or white background, more obvious. There is no great clinical importance, no need to worry about. Clinical treatment mostly with “Volitin”.