Physiologic vitreous clouding is difficult to self-cure, which means that when looking at the bright background, there may be mosquitoes floating in front of the eyes, so it is also known as flying mosquito syndrome. Physiological vitreous clouding is mainly due to age or myopia degree deepening, caused by physiological changes, due to lead to vitreous degeneration, produced by the transparent gradually change to opaque such a change, will cause vitreous clouding, look at things there are black shadows floating phenomenon. But it is a physiological change, so it will not have any effect on vision, and will not bring too bad consequences. But there is no way to heal itself, nor is there a way to reduce or recover. Clinically, the main focus is on observation, without intervention, and there is really no good intervention that can make it recover. So with vitreous clouding, regular follow-up and regular fundus observation is sufficient.