Table 2. Microbiologic spectrum of microbial keratitis: 2009–2014.

Corneal cultures of microbial keratitis at Parkland Health and Hospital Systems and University of Texas Southwestern Medical Center, 5-year period, 2009–2014. (MRSA = methicillin-resistant Staphylococcus aureus, MSSA = methicillin-sensitive Staphylococcus aureus)

	No.	% of Class	% of Total
Gram-Positive Organisms
Coagulase-negative staphylococcus	63	40.4%	19.1%
Non speciated	50	32.1%	15.2%
Staphylococcus epidermidis	12	7.7%	3.6%
Staphylococcus warneri	1	0.6%	0.3%
Alpha hemolytic streptococcus	34	21.8%	10.3%
Non-speciated	10	6.4%	3.0%
Streptococcus pneumoniae	17	10.9%	5.2%
Staphylococcus aureus	25	16.0%	7.6%
MSSA	21	13.5%	6.4%
MRSA	4	2.6%	1.2%
Bacillus species not cereus	8	5.1%	2.4%
Corynebacterium	4	2.6%	1.2%
Other gram-positve	22	14.1%	6.7%
Total gram positive	156	100%	47.3%
Gram-Negative Organisms
Pseudomonas aeruginosa	45	42.5%	13.6%
Moraxella catarrhalis	11	10.4%	3.3%
Serratia marcescens	10	9.4%	3.0%
Klebsiella pneumoniae	5	4.7%	1.5%
Moraxella lacunata	5	4.7%	1.5%
Proteus mirabilis	3	2.8%	0.9%
Haemophilus influenzae	2	1.9%	0.6%
Other gram-negative	25	23.6%	7.6%
Total gram negative	85	100.0%	32.1%
Fungal Organisms
Bipolaris species	11	24.4%	3.3%
Candida species	11	24.4%	3.3%
Fusariam species	9	28.1%	4.1%
Aspergillus species	4	8.9%	1.2%
Other fungal	9	20.0%	2.7%
Total fungal	32	100.0%	14.5%
Parasitic Organisms
Acanthamoeba	21		6.4%
Total Organisms	328