The occlusion of something in the eye is usually caused by vitreous hemorrhage, retinal detachment, glaucoma and so on. 1. Vitreous hemorrhage: Vitreous hemorrhage will cause blockage of vision in front of the eyes, and there will be some symptoms of movable floating objects in front of the eyes, which will change with the movement of the eyeball. 2. Retinal detachment: when the retinal nerve and pigment epithelium are separated, the early symptoms are floaters in front of the eyes, dark shadows in front of the eyes and a sense of blockage, and as the scope of retinal detachment expands, the blockage in front of the eyes will be more obvious. 3. Glaucoma: Glaucoma can damage the optic nerve, causing patients to experience narrowing of the field of vision, blurred vision, and a sense of blockage in front of the eyes. It is recommended to go to regular hospitals for detailed examination to diagnose the cause of the disease and carry out appropriate treatment to avoid delaying the disease.