CCL11 and type 2 diabetes mellitus: To our knowledge, no studies have quantified this chemokine in tear samples from diabetic patients, although a systematic review and meta-analysis comparing CCL11/eotaxin-1 levels from various tissues and biological fluids in 621 patients with T2DM and 793 controls showed that diabetic patients had significantly higher concentrations of CCL11/eotaxin-1 than the controls [43].