Studies using intraocular samples have been of great value in the investigation of the role of cytokines in the development of uveitis, revealing in patients’ aqueous humor a predominance of pro-inflammatory and vascular mediators such as IL-6, IL-8, G‐CSF, TNF-α, and VEGF, (59, 61, 62). This evidence concerns the gene CXCL8 and uveitis.