Table 5: Resistance patterns of frequent bacterial isolates recovered from corneal ulceration over an eight-year period (2005–2012) at a tertiary eye care facility in India.

Resistance toOrganism
S. epidermidis
n (%)
S. aureus
n (%)
S. pneumoniae
n (%)
Bacillus spp.
n (%)
Ps. aeruginosa
n (%)
Acinetobacter sp.  
n (%)

8 antibiotics00001 (0.8)0
7 antibiotics1 (0.2)1 (0.4)0000
6 antibiotics4 (0.7)1 (0.4)1 (0.7)02 (1.7)0
5 antibiotics13 (2.4)2 (0.8)1 (0.7)001 (0.8)
4 antibiotics22 (4.1)6 (2.5)15 (10.7)1 (1.6)3 (2.6)0
3 antibiotics39 (7.3)23 (9.8)45 (32.1)3 (4.8)2 (1.7)2 (1.7)
2 antibiotics83 (15.5)29 (12.3)39 (27.8)6 (9.5)19 (16.2)3 (5.3)
1 antibiotic128 (23.9)48 (20.4)21 (15)7 (11.1)63 (53.8)11 (19.6)
0 antibiotic244 (45.7)125 (53.2)18 (12.8)46 (73)27 (23)39 (69.6)

Total isolates tested534 235 140 63 117 56

n: number of isolates that showed resistance, %: corresponding per cent.
Selected antibiotics: amikacin, chloramphenicol, ciprofloxacin, gentamicin, gatifloxacin, moxifloxacin, ofloxacin, tobramycin.