IL17A and uveitis: Some investigators showed that serum IL‐1β, IL‐6, IL‐8, IL‐10, IL‐17, IL‐22, IL‐23 and TNF‐α play an important role in uveitis, and their function is related to pathologic Th17 cells (Zelazowska‐Rutkowska et al. 2017; Weinstein & Pepple 2018).