<prompt> A 50 year old male presents with cicatricial entopion of upper and lower eyelid. On eversion of upper eyelid, linear conjunctival scars - Arlt line are seen. What is the diagnosis?TrachomaSpring catarrahLigneous conjunctivitisParinaud oculoglandular syndrome  <response>: Ans. is a i.e., Trachoma Arlt line is a feature of trachoma.Signs of Trachoma Conjunctival signs Congestion, conjunctival follicles boiled sagograin like, Papillary hyperplasia, conjunctival scarring Arifs line, concretion. Corneal signsSuperficial keratitis, Herbert follicles, Pannus, Corneal ulcer, Herbert pits, Corneal opacity. 