Pre-existing blindness in a cohort of patients with bacterial keratitis. Issue 11 (7th June 2011) - Oldenburg, Catherine E; Sy, Aileen; Srinivasan, Muthiah; Toutain-Kidd, Christine M; Mascarenhas, Jeena; Ravindran, Meenakshi; Rajaraman, Revathi; Esterberg, Elizabeth J; Chidambaram, Jaya D; Acharya, Nisha R; Lietman, Thomas M; Zegans, Michael E