<prompt> A 50 year old male presents with cicatricial entopion of uper and lower eyelid. On eversion of upper eyelid, linear conjunctival scars - Arlt line are seen. What is the diagnosis?TrachomaSprisng catarrahLigneous conjunctivitisParinaud oculoglandular syndrome  <response>: Arlt line is a feature of trachoma. Ref: Kanski 8the Chap.5, p.138 