Photomicrography of the cornea and conjunctiva. (A) Group C without conjunctival inflammation; caliciform cells were seen in a mass (arrows); PAS, ×100. (B) Group OLO with caliciform cells (large arrows) and subconjunctival edema (thin arrows); PAS, ×100. (C) Group TLO with mild edema of the epithelium (arrows) and corneal stroma (asterisks); HE, ×100. (D) Group TLO with the corneal epithelium showing moderate edema (thin arrow) and the subcorneal area showing moderate inflammatory infiltration with lymphocytes (large arrow) and stroma in the blood vessel (asterisk); HE, ×100. (E) Group TLO with severe edema in the corneal and subcorneal epithelium and moderate edema in the stroma (large arrows); HE, ×400. (F) Group TLO with exocytosis of neutrophils in the corneal epithelium and with the presence of neutrophils (thin arrow) and congestion of blood vessels in the stroma (large arrow); HE, ×400. (G) Corneal epithelium showing exocytosis of neutrophils (arrows) and stroma showing intense edema; HE, ×400. (H) Group OTLO shows the presence of caliciform cells (large arrows), mild inflammatory infiltration (thin arrows), and subconjunctival edema (asterisks); PAS, ×400. (I) The conjunctiva of group OTLO group showing the presence of caliciform cells (large arrows) and lymphocytic inflammatory infiltration with conjunctival necrosis (thin arrows); PAS, ×100.