1.1. Anatomy of the conjunctiva
The conjunctiva is the fine mucous membrane which covers and joins the anterior surface of the eyeball to the posterior surface of eyelid. This translucent membrane lines the white part of the eye starting at the edge of the cornea (limbus) and runs behind the eye to cover the anterior part of the sclera. It then flows, loops forward, and forms the inside surface of the eyelids. At the medial canthus the conjunctiva fold thickens, which is called the semilunar fold.