“…[ 95 ] Though CD4+ and CD8+ T-cells are the predominant infiltrates in ocular surface tissues in chronic oGVHD,[ 96 ] it is difficult to classify it as pure T-Helper cell-1, T-Helper cell-2, or T-Helper cell-17-mediated disease. Studies evaluating tear cytokines in oGVHD found raised intercellular adhesion molecule-1 (ICAM-1),[ 97 ] interleukin-1 receptor antagonist (IL-1Ra),[ 98 ] IL-2,[ 99 ] IL-1 b,[ 97 ] IL-6,[ 9 97 99 100 ] IL-8,[ 9 85 97 98 ] IL-10,[ 9 98 99 ] IL -2AP70,[ 9 ] IL-17A,[ 9 99 ] interferon gamma (IFN- g),[ 9 99 100 ] tumor necrosis factor- a (TNF-α),[ 99 ] matrix metallopeptidase 9 (MMP-9),[ 9 101 ] and vascular endothelial growth factor (VEGF). [ 9 ] Among these IL-10, IL-6, and TNF-α, IL-8, ICAM-1, IL-12AP70, VEGF, IFN- g, and MMP-9 were found to have a fair correlation with the clinical ocular surface evaluation tests.…”