Dark spots in the vision may be caused by a foreign body in the cornea, which may appear in the pupil area. If there is a history of a foreign body entering the eye, ophthalmology is recommended to do a slit lamp examination to remove the foreign body, and then decide on the next step of treatment according to the degree of corneal damage. Lens limitation clouding can also lead to black spots in the vision, if it affects the vision, surgery is recommended, but does not affect the vision can not do any treatment, observation, follow-up can be. Vitreous clouding, also known as flying mosquito, can also occur, with age, the vitreous body gradually liquefaction, aging and become turbid, causing black spots in front of the eyes floating, generally without treatment. If you are not sure, you can take oral lecithin complex iodine and other drugs to promote vitreous blood circulation, to help absorb turbidity, pay attention to rest, do not overuse of the eyes.