Emedastine fumarate eye drops are mainly used to relieve allergic conjunctivitis and other related symptoms. The main active ingredient of this drug is emedastine, which is a relatively selective H1 receptor antagonist. It can alleviate the symptoms of allergic reactions mainly through antihistamine, thus playing an anti-allergic role. Emedastine fumarate eye drops are mainly used to relieve the signs and symptoms associated with allergic conjunctivitis, which can relieve the itching, redness and swelling of the eye and other related symptoms. It is important to note that this medication should only be used on the eye in the first place, and if it is to be used at the same time as other eye drops, there should be at least a ten minute interval between the two eye drops. In conclusion, Emedastine fumarate eye drops have mainly anti-allergic effects.