Therefore, we evaluated the relations between macular edema and indicators of inflammation (aqueous flare value and vitreous fluid levels of interleukin (IL)-6, monocyte chemotactic protein (MCP)-1, VEGF, intercellular adhesion molecule (ICAM)-1, and VEGF receptor (VEGFR)-2) in patients with BRVO and macular edema. The gene discussed is CCL2; the disease is macular retinal edema.