This case is reported because of the unusually large size of the osteoma. The tumor caused severe headaches and rendered the patient blind in the involved eye. After surgical removal of the growth, a visual acuity of 20/200 was obtained together with an excellent cosmetic result.
Frequency of Osteomata
Osteoma of the orbit is not a common tumor of the orbit. Reese1 examined 109 cases of tumors arising primarily in the orbit and found osteoma in one case only. Benedict2 examined 740 tumors or tumorlike lesions of the orbit at the Mayo Clinic and reported 38 as osteomas. Forrest3 examined 184 primary orbital tumors and found osteoma in only 5 cases.
Classification of Osteomata
Osteomata are classified into 2 main types by Parsons4: (1) hard, eburnated or ivory osteomas; (2) soft or cancellous osteomas.
Pathology of Osteomata
Andrews5 states that osteomata are usually spherical or
KATLAN NR, GRIFFIN WR. Osteoma of the Orbit. Arch Ophthalmol. 1961;65(4):542-545. doi:10.1001/archopht.1961.01840020544014