Allergic conjunctivitis is a condition characterized by pathological inflammatory changes in the superficial membrane around the eyeball and on the inner surface of the eyelids, which is called the conjunctiva. At the same time, it is important to clearly understand that the nasopharynx and the eyes are connected with the gastrointestinal tract. If, after a night’s sleep, you have a large amount of mucus coming from the nose or even a cough, then you should know that you need to be examined for helminthic infestations, as well as for the presence of viruses, fungi, and bacteria in the body.