The eyes seem to have something flying mainly in the flying mosquitoes, is the eyes in the bright background or white wall, there are black filaments or black dots in front of the eyes, similar to flying mosquitoes, so called flying mosquitoes. This situation is a physiological vitreous turbidity, usually due to age or myopia caused by the deepening of the vitreous degeneration, liquefaction, the resulting opaque phenomenon, that is, the vitreous body from the original jelly-like solid liquefaction into a watery liquid, the liquid is easy to produce impurities formed similar to the flying mosquito-like vitreous turbidity. This type of vitreous opacity is clinically observable, usually not treated, and there is no good way to treat it, usually using the method of regular follow-up and review. However, if there is an obvious large black shadow covering the eyes, you need to go to the hospital in time to see the doctor.