The rate of progression can be a helpful diagnostic indicator. Conditions with onset occurring over days to weeks include nonspecific orbital inflammation (NSOI), scleritis, myositis, dacryoadenitis, orbital cellulitis, hemorrhage, thrombophlebitis, fulminant neoplasia (rhabdomyosarcoma, neuroblastoma), and metastatic tumors. Conditions with onset occurring over months to years include dermoid cyst, benign mixed tumor, neurogenic tumor, cavernous hemangioma, lymphoma, fibrous histiocytoma, fibrous dysplasia, or osteoma.
Excerpted from BCSC 2020-2021 series: Section 10 - Glaucoma. For more information and to purchase the entire series, please visit https://www.aao.org/bcsc.