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What is Trachoma is characterized by the presence of and explain in detail?
Trachoma - Chronic keratoconjunctivitis Affects the superficial epithelium of conjunctiva and corneaCaused by Chlamydia trachomatis (TRIC) agentA, B, Ba, C - Hyperendemic trachomaD to K - Neonatal and adult inclusion conjunctivitisTrachoma Disease spectrumConjunctivaCorneaSigns Congestion of upper tarsal conjunctivaFollicles over upper tarsal or palpebral conjunctiva, lower fornix, plica semilunaris Arlt's line - linear scar in sulcus Sub tarsalisPapillary hyperplasia Concretions Superficial keratitis Herbe follicles Pannus - infiltration, and vascularization of the cornea Corneal ulcer Herbe pits Corneal opacity SequelaeConcretions Pseudocyst Xerosis SymblepharonTrichiasis Corneal opacity Ectasia Corneal xerosis Corneal pannus Epidemiological criteria Follicles on the upper tarsal conjunctivaLimbal follicles like Herbe pitsConjunctival scarring (Trichiasis, Entropion )Vascular pannus at superior limbus(Refer: AH Khurana, Comprehensive Textbook of Ophthalmology,5thedition, pg no: 62-66)