IL17A and dry eye syndrome: However, there was also a study demonstrating that a decreased amount of Corynebacterium in patients with meibomian gland dysfunction (MGD) type of dry eye (36), supported by evidence that Corynebacterium elicited interleukin 17 response from γδ T cells in the ocular mucosa, driving neutrophil recruitment and antimicrobials release into the tears (37).