The black shadow fluttering in front of the eye is related to vitreous clouding, retinal detachment, cataract, etc. According to the cause of the disease, targeted medication and surgical treatment should be carried out in order to improve the clinical symptoms. 1. Vitreous clouding: if there are dark shadows in front of the eyes caused by vitreous clouding, some aminopeptide iodine eye drops can be used, which can promote the blood circulation of the eyes; surgical treatments can be carried out if necessary, such as vitrectomy, YAG laser ablation, and so on. 2. Retinal detachment: dark shadows in front of the eyes caused by retinal detachment can be treated with surgery, including laser surgery, cryosurgery, and pneumatic retinal fixation. 3. Cataract: Severe cataract may also lead to dark shadows in front of the eyes, and some lens protein protectants can be used, such as pinoxin eye drops, etc. Surgical treatments can be taken when the indications for surgery are met, including extracapsular cataract extraction, ultrasonic emulsification cataract suction and so on. There are many reasons for the dark shadows in front of the eyes, not only including the above, you should actively consult a doctor to clarify the cause of the disease, and carry out targeted treatment.