The eyes are complex organs, and their various parts each serve important roles in vision and overall eye health. One crucial component of the eyes is the mucous membranes, which help to protect and nourish the eyes. There are several different synonyms for this part of the eye. For example, the mucous membranes of the eye may be referred to as the conjunctiva, which is the thin, clear membrane that covers the front of the eye and lines the inside of the eyelids. Other synonyms for the mucous membranes of the eye include the sclera, cornea, and iris, all of which are key components of the eye anatomy.