Spectrum of Bacterial Keratitis at a Tertiary Eye Care Centre in India

Table 3

Bacterial isolates recovered from patients with corneal ulceration over an 8-year period (2005–2012) at a tertiary eye care facility in India.

Bacterium	2005; n (%)	2006; n (%)	2007; n (%)	2008; n (%)	2009; n (%)	2010; n (%)	2011; n (%)	2012; n (%)	Total; n (%)
Staphylococcus epidermidis	48 (37.5)*	38 (31.7)*	73 (43.7)*	81 (54)*	75 (46.8)*	87 (51.8)*	85 (45.4)*	47 (37.6)*	534 (44)
Staphylococcus aureus	03	10	26	21	28	35	61	51	235 (19.5)
Staphylococcus saprophyticus	00	04	00	01	02	0	1	0	8 (0.6)
Staphylococci total	51	52	99	103	105	122	147	98	777 (64.5)
Streptococcus pneumoniae	27	24	27	13	14	14	12	9	140 (11.6)
Viridans streptococci	0	0	0	0	08	0	0	0	8 (0.6)
Streptococci total	27	24	27	13	22	14	12	9	148 (12.3)
Total Gram-positive cocci total	78	76	126	116	127	136	159	107	925
Bacillus species	21	13	07	05	04	3	2	8	63 (5.2)
Corynebacterium diphtheriae.	00	00	03	00	00	1	0	0	4 (0.3)
Gram-positive bacilli total	21	13	10	5	4	4	2	8	67
Gram positive organisms total	99	89	136	121	131	140	161	115	992
Pseudomonas aeruginosa	15	23	20	17	10	18	11	3	117 (9.7)
Acinetobacter species	10	08	04	05	11	5	9	4	56 (4.6)
Aeromonas species	02	00	04	01	04	2	4	1	18 (1.49)
Enterobacter species	0	0	02	04	02	0	0	0	08 (0.6)
Klebsiella pneumoniae	01	00	01	02	02	3	2	1	12 (0.99)
Serratia species	01	00	00	00	00	0	0	0	01 (0.08)
Flavobacterium species	0	0	0	0	0	0	0	1	01 (0.08)
Gram negative total	29	31	31	29	29	28	26	10	213
Total isolates	128	120	167	150	160	168	187	125	1205

n: number of isolates; %: corresponding per cent; *% in respective year.