<prompt> Trachoma is characterized by the presence ofFollicles over the corneaFollicles in palpebral conjunctivaFollicles in bulbar conjunctivaPapillae in bulbar conjunctiva  <response>: 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 Arlts 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 limbusRefer: AH Khurana, Comprehensive Textbook of Ophthalmology,5thedition, pg no: 62-66 