Cause of blindness in trachoma-
Trachoma is a leading cause of preventable blindness worldwide, Conjunctival scarring which may be irregular, star-shaped or linear. Linear scar present in the sulcus subtarsalis is called Arlt&;s line. ref : A K KHURANA text of Ophtalmology,E4, page-64
Scarring
Pannus
Chronic dacrocystitis
Entropion
Conjunctiva