Vitreous body projecting into the anterior chamber through the pupil is one of the clinical signs of vitreous hernia. It is commonly seen after intracapsular cataract extraction. When the vitreous hernia contacts the corneal endothelium, it is easy to cause corneal edema and clouding. Clinical need and the following symptoms differential diagnosis: 1, the vitreous visible spherical cysts: vitreous porcine cysticercosis patients, the vitreous body was turbid to varying degrees, the vitreous body can be seen in the translucent gray or light blue spherical cysts, the center of which often has a gray-white or yellowish-white round spot, for the head of the cysticercus larvae, and sometimes can be seen cysticercus larvae in the vitreous body writhing. In the early stage, there are oval black shadows fluttering in front of the eyes and and telescopic deformation, writhing shadows. In the late stage, due to the disturbance of intraocular tissues and inflammation formation, vision can be significantly reduced. Even blindness. 2, non-vitreous lesions in front of the eye flying mosquito: congenital physiological flying mosquito is a kind of physiological flying mosquito. Normal people stare at white objects or the blue sky, can be found in front of the floating small dots or filaments of floating objects, sometimes closed eyes can also be seen, but the objective examination can not be found in any vitreous lesions, this phenomenon is called physiological mosquito. This phenomenon is called physiological mosquito. It is generally believed to be due to the vitreous cortex cells or walking in the retinal blood vessels in the retina blood cells projected on the retina. 3, the vitreous has blood: is eye trauma or retinal vascular disease caused by vision hazards a common complication, on the one hand, the hemorrhage not only make refractive media turbidity, prevent light to reach the retina, but also can produce serious damage to the eye tissues; on the other hand, the body’s response to hemorrhage can be made blood gradually be removed. The consequences of vitreous hemorrhage vary greatly from case to case, and appropriate clinical management should be given in a timely manner according to the primary injury, the amount of off-duty hemorrhage, the absorption of the hemorrhage, and the ocular response. After cataract extraction, the vitreous body becomes embedded in the anterior chamber from the pupil, which is called vitreous hernia. It may cause glaucoma due to the obstruction of atrial fluid circulation. Vitreous hernia after intracapsular cataract extraction. The anterior interface is pigmented and the pupil is partially blocked.