Posterior vitreous detachment is unlikely to affect the retina and has a low probability of leading to detachment of the tensor retinae, usually less than 5%. Posterior vitreous detachment mainly occurs in middle-aged and elderly people with significant vitreous liquefaction, in which the vitreous body is separated from the inner retinal membrane, but except for the base of the vitreous body, the macula of the optic disc and the retinal blood vessels where the connection is relatively tight, other parts of the vitreous body can be separated from the retina without difficulty, which may lead to retinal detachment of pulling, but the probability of this happening is usually less than 5 percent. If a patient with posterior vitreous detachment exercises strenuously, macular cracks and vitreous hemorrhage may occur in the macula, periphery of the retina and other tightly connected areas due to the pulling effect, which may cause obvious effects on the patient’s vision. It is recommended that patients with vision loss and distorted vision should consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.