No. % of Class % of Total Gram-Positive Organisms       Coagulase-negative staph 36 35.3% 16.4% Non speciated 26 25.5% 11.8% Staphylococcus epidermidis 9 8.8% 4.1% Staphylococcus warneri 1 1.0% 0.5% Alpha hemolytic streptococcus 23 22.5% 10.5% Non-speciated 10 9.8% 4.5% Streptococcus pneumoniae 13 12.7% 5.9% Staphylococcus aureus 18 17.6% 8.2% MSSA 15 14.7% 6.8% MRSA 3 2.9% 1.4% Group B Streptococcus 1 1.0% 0.5% Bacillus species not cerus 5 4.9% 2.3% Corynebacterium 4 3.9% 1.8% Other gram-positve 15 14.7% 6.8% Total gram positive 102 100.0% 46.4% Gram-Negative Organisms       Pseudomonas aeruginosa 35 41.2% 15.9% Moraxella catarrhalis 8 9.4% 3.6% Serratia marcescens 6 7.1% 2.7% Klebsiella pneumoniae 5 5.9% 2.3% Moraxella lacunata 5 5.9% 2.3% Proteus mirabilis 3 3.5% 1.4% Haemophilus influenzae 2 2.4% 0.9% Neisseria gonorrhoea 1 1.2% 0.5% Other gram-negative 20 23.5% 9.1% Total gram negative 85 100.0% 38.6% Fungal Organisms       Fusariam species 9 28.1% 4.1% Bipolaris species 8 25.0% 3.6% Candida species 5 15.6% 2.3% Aspergillus species 4 12.5% 1.8% Other fungal 6 18.8% 2.7% Total fungal 32 100.0% 14.5% Parasitic Organisms       Acanthamoeba 1 100.0% 0.5% Total Organisms 220

Table 1: Microbiological spectrum of microbial keratitis: 2009-2014. Corneal cultures of microbial keratitis at Parkland Health and Hospital Systems, 5-year period, 2009-2014. (MRSA: methicillin-resistant Staphylococcus aureus ; MSSA: methicillin-sensitive Staphylococcus aureus ).