The tears that coat the surface of your eyes have both a liquid and a mucous layer to them. It is normal to have a very thin amount of mucus in your tear film. But that mucus can significantly increase when the eye gets irritated. Some of the most common causes of irritation that can make the eye overproduce mucus are: Conjunctivitis, which could be caused by an allergy, bacteria or virus Blepharitis, which is an inflammation of the eyelids Dry Eye When any of these conditions......