Although calcareous formations within the eye are of frequent occurrence, osseous formations are not so common but that the following case may be instructive both pathologically and clinically. For a long time all hardened deposits in the eye were considered calcareous, and the formation of true bone was much doubted. Knapp collected and studied quite a number of cases of ossifications within the eye, which he published in the Archives of Ophthalmology and Otology, Vol. ii, pp- 1-35. At that time he considered the capillary layer of the choroid the origin of all intra-ocular ossifications. Since then a number of cases have been reported (Knapp's Archives of Ophthalmology, Vols vi and ix) in which they occurred in other structures.
The formation of bone is usually preceded by prolonged and frequently severe intra-ocular inflammation, and is generally of traumatic origin. The development of bone requires no other antecedent condition than a
WARE L. OSSIFICATION OF THE CHOROID.1. JAMA. 1886;VI(2):39–40. doi:10.1001/jama.1886.04250010047005