Fig. 15. UBM features of miscellaneous corneal disorders. A. Corneal edema appears as thickening of superficial layer of cornea; corneal stroma is thinner than normal and abnormally bright. B. Bullous keratopathy appears as localized separation of corneal epithelium from Bowman's membrane filled with clear serous fluid. C. Band keratopathy appears as dense, brightly reflective subepithelial plaque in peripheral cornea. D. Postinflammatory corneal scarring after keratitis; note nonuniform corneal thickness and abnormal reflectivity of corneal stroma.