The phenomenon of black shadow shaking in front of the eyes of the elderly may be physiological vitreous clouding, may also be caused by pathological vitreous clouding. 1. Physiological vitreous clouding: due to the age of the elderly, the hyaluronic acid macromolecules in the vitreous cavity will be cleaved, which will lead to uneven refractive medium vitreous clouding, patients can appear in front of the eyes of the black shadow wobbling manifestations, generally belong to the physiological manifestations, do not need to carry out special treatment. 2. Pathological vitreous clouding: if the elderly have vitreous blood, vitreous inflammation, etc., the patient can appear pathological vitreous clouding, the patient can appear in front of the right eye black shadow wobbling performance, can also appear different degrees of visual acuity loss. It is recommended that patients with fluttering black shadows and other discomforts should consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.