A   Gentamicin Tobramycin   Susceptible Total % Susceptible Total % Coagulase Negative Staphylococcus 15 15 100.0% 0 0 n/a S. aureus 15 15 100.0% 0 0 n/a MSSA 12 12 100.0% 0 0 n/a MRSA 3 3 100.0% 0 0 n/a P. aeruginosa 32 33 97.0% 33 33 100.0% Resistant Cases 1 case E. coli 1 case E. coli   1 case P. aeruginosa   B   Ciprofloxacin Levofloxacin   Susceptible Total % Susceptible Total % Coagulase Negative Staphylococcus 0 0 n/a 0 0 n/a S. aureus 0 0 n/a 0 0 n/a MSSA 0 0 n/a 0 0 n/a MRSA 0 0 n/a 0 0 n/a P. aeruginosa 33 33 100.0% 2 2 100.0% Resistant Cases 1 case E. coli 1 case nocardia abscessus   C   Erythromycin Cefazolin   Susceptible Total % Susceptible Total % Coagulase Negative Staphylococcus 9 19 47.4% 9 9 100.0% S. aureus 10 17 58.8% 14 14 100.0% MSSA 10 14 71.4% 14 14 100.0% MRSA 0 3 0.0% 0 0 n/a P. aeruginosa 0 0 n/a 0 0 n/a

Table 2: Antibiotic susceptibility of most common corneal pathogens: 2009-2014. Antibiotic susceptibilities of the most common corneal pathogens against commonly available ophthalmic antibiotics. (A) Aminoglycoside antibiotics, (B) Fluoroquinolone antibiotics, (C) Macrolide and cephalosporin antibiotics.