MMP2 and glaucoma: In summary, our study showed that the expression levels of TNF-α, IL-2, IL-6, IL-8, BDNF, MMP-2, MCP-1, VEGF, IFN-γ, LT-α, bFGF, PDGF-AA, and TIMP-1 were different among the 3 types of glaucoma.