eye, oculus, optic - the organ of sight

eyelid, lid, palpebra - either of two folds of skin that can be moved to cover or open the eye; "his lids would stay open no longer"

bulbar conjunctiva, conjunctival layer of bulb, tunica conjunctiva bulbi - the part of the conjunctiva covering the anterior face of the sclera and the surface epithelium of the cornea

conjunctival layer of eyelids, palpebra conjunctiva, tunica conjunctiva palpebrarum - the part of the conjunctiva lining the posterior surface of the eyelids; continuous with the bulbar conjunctiva

pinguecula - a slightly elevated elastic tissue deposit in the conjunctiva that may extend to the cornea but does not cover it

pterygium - a thickened triangular layer of conjunctiva extending from the nasal edge of the eye to the cornea; pterygia arise from irritation of the pinguecula

mucosa, mucous membrane - mucus-secreting membrane lining all body cavities or passages that communicate with the exterior