Optical Coherence Tomography and Optical Coherence Tomography Angiography Features of Optic Disc Melanocytoma: Peripapillary Hyperreflective Ovoid Mass-like Structures, Perfusion Deficits, and Association With Vision Loss.

Optic disc melanocytoma is associated with significant structural and vascular alterations, including PHOMS, optic nerve head hypoperfusion, and eventually retinal nerve fiber layer atrophy.

These features reflect both mechanical compression and ischemic injury to the optic nerve and can be used to assess visual prognosis.

The absence of intrinsic tumor vasculature in optic disc melanocytoma underscores its fundamental difference in biological behavior from juxtapapillary choroidal melanoma.