The exact mechanism in dry eye disease is not known Binds to the integrin lymphocyte function-associated antigen-1 (LFA-1), a cell surface protein bound on leukocytes, and blocks the interactions of LFA-1 with its cognate ligand intercellular adhesion molecule-1 (ICAM-1) ICAM-1 may be overexpressed in corneal and conjunctival tissues in dry eye disease; LFA-1/ICAM-1 interaction can contribute to the formation of an immunological synapse resulting in T-cell activation and migration to target tissues In vitro studies demonstrated that lifitegrast may inhibit T-cell adhesion to ICAM-1 in a human T-cell line and may inhibit secretion of inflammatory cytokines in human peripheral blood...