V.B.9. Rare Indications for Vitrectomy: Tumor Excision, Optic Nerve Pits, and Malignant Glaucoma

These rare indications for pars plana vitrectomy are related in that highly novel techniques have evolved to either achieve the therapeutic goal or to improve our understanding of the pathophysiology. Even then, the merits of the procedures continue to be debated as in the case of optic nerve pit and malignant glaucoma. In these conditions, we await a more definitive understanding of their pathophysiology before the proper approach to therapy can be determined. Until such time, however, the following describes the current vitrectomy approaches to tumors, optic pits, and malignant glaucoma.