IL6 and dry eye syndrome: No significant correlation could be found between the levels of IFN- γ and IL-6 (r=0.23, p=0.189).Tear IL-6 levels correlated with complaints of dry eyes (r=0.39, p=0.02), tear production measured by Schirmer test (r=-0.59, p<0.0001), fluorescent staining of the cornea (r=0.42, p=0.01), and OSDI score (r=0.40, p=0.005).