disease that causes gunk in eye
Sleep in your eyes usually isn't cause for alarm, but if you notice a difference in consistency, color and quantity of eye gunk, it could indicate an eye infection or disease. Common eye conditions associated with abnormal eye discharge include: Conjunctivitis. Eye discharge is a common symptom of conjunctivitis (pink eye), an inflammation of the conjunctiva  the thin membrane that lines the white of the eye (sclera) and the inner surface of the eyelids.