Fig. 2. A. Antibiotic susceptibility of all organisms tested. B. Gram-positive bacteria. C. Gram-negative bacteria. (Ofl, ofloxacin; Cip, ciprofloxacin; Nor, norfloxacin; Gen, gentamicin; Tob, tobramycin; Chl, chloramphenicol; Tet, tetracycline; Ery, erythromycin). (Jensen HG, Felix C. In vitro antibiotic susceptibilities of ocular isolates in North and South America. Cornea 1998;17:79)