1690s, from Modern Latin trachoma, from Greek trakhoma "roughness," from trakhys "rough."
trachoma tra·cho·ma (trə-kō'mə)
A contagious disease of the conjunctiva and cornea, caused by the bacterium Chlamydia trachomatis and marked by inflammation, hypertrophy, and formation of granules of adenoid tissue. It is a major cause of blindness in Asia and Africa. Also called contagious granular conjunctivitis, Egyptian ophthalmia, granular conjunctivitis, granular ophthalmia.