This 78YO male has a history of uveal malignant melanoma (MM), which was successfully treated with initial photodynamic therapy (PDT) (due to the presence of subretinal fluid) followed by transpupillary thermotherapy (TTT) once dry.
He developed a secondary branch retinal vein occlusion (BRVO), likely due to thermal damage from the TTT.
Vision is 20/30, and we continue to follow him closely. A scatter laser will be needed if he develops increasing ischemia with neovascularization from the BRVO.
Learning Points:
BRVOs are virtually always caused by an artery compressing a vein at a shared arteriovenous crossing.
However, rarely, they can occur due to other causes, including inflammation (most commonly sarcoidosis) or secondary to interventions such as TTT.
