A comprehensive measurement of inflammatory cytokines and chemokines in the aqueous humor and vitreous of the eyes of RP patients using multiplex enzyme-linked immunosorbent assay showed that IL-6, IL-8, and MCP-1 are elevated in the aqueous humor of RP patients, and that a greater variety of molecules (e.g., IL-1β, IL2, IL-4, IL-6, IL-8, IL-10, IFN-γ, MCP-1) are increased in the vitreous with more significant fold changes (121). Here, CCL2 is linked to retinitis pigmentosa 1.