CXCL8 and open-angle glaucoma: In POAG and PEG patients, TGF-β, IL-8, and SAA were positively correlated with pre-operative IOP, and IL-6 was positively correlated with age (59) There was also a report that found IL-8, IP-10, CCL2, and CCL4 were correlated with IOP in POAG and NVG eyes (43).