Blurred vision due to excessive eye discharge may be due to physiological factors such as poor eye cleanliness and excessive eye use, or it may be caused by conjunctivitis. Secretion of eye droppings is a normal physiological phenomenon. Under the influence of physiological factors such as poor eye cleaning and excessive eye use, symptoms of heavy eye droppings and blurred vision can occur. It can also be caused by pathological factors, such as bacterial conjunctivitis, the eye booger is mostly yellow purulent secretion, thick texture, attached to the surface of the cornea, resulting in blurred vision. Viral conjunctivitis, the eye boogers are mostly white mucus-like, accompanied by burning pain in the eyes, photophobia, tearing and other symptoms. Allergic conjunctivitis, may be caused by dust, pollen, cosmetics, etc., need to find out the allergens and stay away from it. The appearance of eye boogers blurred vision, should go to the hospital in time to find out the cause, follow the doctor’s instructions for treatment.