An unusual case of black heterotopic orbital bone is described. We are unable to find a similar account of osseous pigmentation in the ophthalmic or systemic literature. A variety of special studies suggested that the pigment was an oxidation-polymerization product such as melanin, oxidized epinephrine, or oxidized tetracycline. Various possibilities concerning the histogenesis of the pigmented bone are considered.
Johnson BL, Buerger GF. Black Orbital Bone. Arch Ophthalmol. 1972;88(4):400-403. doi:10.1001/archopht.1972.01000030402010