Fig. 82. Hemosiderosis and heterochromia. A. The left iris has acquired a darker appearance after hyphema resolution. The eye appears exotropic and the pupil is small. B. Punctate brown orange material can be identified in the subcapsular region of the crystalline lens anterior pole in a case associated with a retained intraocular iron foreign body. C. Prussian blue staining of a histologic section of the lens demonstrates that the iron ions are concentrated within the lens epithelial cells and not in the adjacent lens capsule (C) or lens cortex (CO). (× 63.)