TABLE 1.
Frequencies of isolation of gram-positive bacteria during asymptomatic lens wear and CIEs
| Microorganism | Isolation of bacterium during:
|
P | |||
|---|---|---|---|---|---|
| Asymptomatic lens wear (n = 4,203)
|
CIE (n = 118)
|
||||
| Incidence (%) | Median CFU (range) | Incidence (%) | Median CFU (range) | ||
| S. epidermidis | 41.4 | 4 (1–1,800) | 40.7 | 5 (1–620) | 0.924 |
| Corynebacterium sp. | 9.1 | 2 (1–1,300) | 12.7 | 2 (1–68) | 0.192 |
| Micrococcus sp. | 8.4 | 3 (1–740) | 6.8 | 5 (1–15) | 0.734 |
| S. aureus | 6.3 | 3 (1–615) | 9.3 | 3 (1–398) | 0.180 |
| Bacillus sp. | 4.7 | 2 (1–500) | 8.5 | 4 (1–500) | 0.075 |
| S. pneumoniae | 0.6 | 143 (2–1,800) | 7.6 | 48 (3–525) | <0.0001a |
| Staphylococcus sp. | 6.0 | 2 (1–500) | 4.2 | 2 (2–33) | 0.554 |
| Propionibacterium sp. | 0.9 | 15 (2–1,500) | 1.7 | 10 (1,500) | 0.309 |
| Propionibacterium acnes | 0.5 | 5 (2–375) | 1.7 | 20 (100) | 0.138 |
| A. viridans | 0.1 | 2 (2) | 0 | 1.000 | |
| Nocardia sp. | 0.1 | 3 (1–3) | 0 | 1.000 | |
| Streptomyces sp. | 0.1 | 5 (1–30) | 0 | 1.000 | |
| Alpha-hemolytic streptococcus | 0.5 | 4 (1–500) | 0.9 | 2 | 0.425 |
| Peptostreptococcus sp. | 0.1 | 3 (2–5) | 0 | 1.000 | |
a
Mann-Whitney U test, 0.677.