When patients have retinal detachment, foreign body in the eye or vitreous hemorrhage with no obvious effect of conservative treatment, vitrectomy is generally recommended, and specific recommendations for consultation with the doctor. 1. Retinal detachment: It is the separation of the neuroepithelial layer and the pigment epithelial layer of the retina, which is often manifested by symptoms such as flashing sensation, impaired vision, and floating objects in front of the eyes. These patients can be treated by vitrectomy to repair the retinal hole and reset the retina. 2. Foreign body in the eye: Vitrectomy is an ophthalmic microsurgery, which can be categorized into partial removal of the vitreous body or removal of most of the vitreous body. If the foreign body in the eye has entered the vitreous, vitrectomy can be performed according to the cleanliness and nature of the foreign body. 3. Vitreous hemorrhage conservative treatment effect is not obvious: vitreous hemorrhage refers to inflammatory, vascular and other causes of vitreous blood, vision loss phenomenon, after conservative treatment, if the vitreous blood absorption is not obvious, this time generally can be treated by vitrectomy. When eye discomfort occurs, you need to consult a doctor as soon as possible, after a complete examination to clarify the condition, the patient can choose whether to undergo vitrectomy treatment under the guidance of the doctor.