Association of serum immunoglobulins levels and eye injuries in sulfur mustard exposed: Sardasht-Iran Cohort Study

► In exposed with tearing and blurring of vision, serum IgM was significantly lower than matched controls. ► Serum levels of IgM and IgG4 in exposed patients with normal ocular conditions were lower and IgG1 was higher than the matched controls. ► Serum IgG2 in exposed with blurring of vision were significantly higher than the matched controls. ► Serum immunoglobulins alterations especially IgM and IgG4 levels are associated with some aspects of ocular surface problems.