How is there black dot inside the eye to return a responsibility

There are black spots in the eyes may be vitreous opacity, vitreous opacity is caused by vitreous liquefaction, clinically divided into physiological turbidity and pathological turbidity. Physiological turbidity is their own sense of floaters in front of their eyes, there are small black spots and doctors with ophthalmoscopy did not find vitreous opacity, this situation does not affect vision, do not need treatment. Pathological turbidity is a turbidity that affects vision. If thyroid function is normal, oral lecithin complex iodine can be taken. 2-4 boxes are a course of treatment. Vitamin C can also be used for iontophoresis to promote the absorption of vitreous opacity. If there is a large piece of vitreous opacity, laser treatment can be done. If you always feel black spots in front of you, floating objects, and lightning sensation, you need to rule out the possibility of vitreous detachment.