Ossification in the old atrophic globes usually involves the choroid, ciliary body, and the lens after the rupture of its capsule. Bone formation in the tarsus is rare. Duke-Elder1 could find only a few references in the literature regarding true bone formation in this tissue and these occurred after hyaline degeneration,2 trachoma,3 syphilitic tarsitis,4 or chalazion.5 We reported one case earlier in which ossification was seen as a sequel to amyloid degeneration.6
The present patient developed a large bony wedge in the tarsus after recurrent attacks of chalazia during a period when he was suffering from active tuberculosis.
Report of Case
A Hindu male was admitted to this hospital on March 24, 1965, for increasing ptosis of the left eye for the last 12 years. He had undergone thoracoplasty for tuberculosis in 1950. Subsequently he suffered from recurrent chalazia for about six years before
NATH K, RAHI AH, RAHI SL. Heterotopic Ossification of Tarsus. Arch Ophthalmol. 1966;75(5):642-643. doi:10.1001/archopht.1966.00970050644012