Rapidly progressing, with corneal destruction as fast as within 24 hrs
Corneal perforation is most sight threatening complication
Strep, staph, pseudomonas, enterobacteriaceae
Risk factors
Contact lens use
Corneal surgery, trauma
Chronic dry eye
Recent corneal disease (viral, fungal keratitis)
Immune deficiency, topical steroids
Contact lens use
Corneal surgery, trauma
Chronic dry eye
Recent corneal disease (viral, fungal keratitis)
Immune deficiency, topical steroids
Bacterial keratitis
Iritis
Ultraviolet keratitis
Conjunctivitis
Herpes simplex keratitis
Glaucoma
Bacterial conjunctivitis
UV keratitis