三.Essay question 1.Pathological changes of keratitis causative agent infiltration→ transparent corneal ulcer->descemetocele corneal perforation nebula macula← corneal scar← corneal fistula leucoma Adhesiveness keratoleukoma panophthalmitis Glaucoma corneal staphyloma atrophia bulbi三．Essay question 1. Pathological changes of keratitis causative agent infiltration transparent corneal ulcer descemetocele corneal perforation nebula macula corneal scar corneal fistula leucoma Adhesiveness keratoleukoma panophthalmitis Glaucoma corneal staphyloma atrophia bulbi