MMP9 and Schwartz-Jampel syndrome: This study presented (1) high conjunctival swab culture positivity rate in Korean chronic SJS patients with predominant isolation of Coagulase-negative Staphylococci and Corynebacterium species, (2) tear MMP9 positivity to be related with positive culture, and (3) no association between the use of topical cyclosporine or corticosteroid and persistent culture positivity.