The company’s main business is to provide a wide range of products and services to its customers. The actual fact is that you can find a lot of people who are not able to see the actual thing. It turns out that the eye is filled with colorless and transparent vitreous, vitreous turbidity is caused by the appearance of opaque material within the transparent vitreous, and according to the size and shape of the opaque material manifests itself as different black shadows in front of the eyes. Vitreous turbidity is divided into physiological vitreous turbidity and pathological vitreous turbidity. Physiological vitreous clouding is also known as physiological mosquitoes, mostly seen in the elderly, manifested as the fly or threads in front of the eyes, does not affect vision, and does not require treatment. Pathological vitreous clouding has more causes, can be the retina or uvea of the hemorrhage into the vitreous; hypertension, diabetes, uveitis of the hemorrhage or exudate into the vitreous; high myopia of the elderly vitreous degeneration; retinal fissure; other such as eye trauma, intraocular foreign body retention, parasites or tumors can also occur vitreous clouding. Pathological vitreous opacities tend to be sudden and develop rapidly. Patients with mild vitreous opacities feel that the dark shadows in front of their eyes are floating, like flies or threads. The degree of visual impairment varies with the location and degree of vitreous opacity. Mild clouding does not affect vision, while severe cases can lead to blindness. Pathological clouding should be treated for the primary cause. Fresh vitreous hemorrhage should be treated with bed rest and hemostatic medications. For old hemorrhages, medications to promote the absorption of the clouding should be applied. In severe cases where medication is ineffective, surgical treatment may be used. Therefore, for the floating black shadow in front of the eyes, you should go to the hospital to identify the cause, diagnose and treat early, and do not delay the condition.