Pseudomonas aeruginosa in vitro corneal isolate sensitivity to ofloxacin, ciprofloxacin, and trovafloxacin: A comparative study

Alice Song, Timothy J. McCulley, Byron L. Lam, William J. Feuer, Darlene Miller, Eduardo C. Alfonso

Research output: Contribution to journalArticle


PURPOSE: To compare sensitivity of Pseudomonas aeruginosa corneal isolates to ofloxacin, ciprofloxacin, and trovafloxacin. METHODS: Sensitivities of P. aeruginosa corneal isolates to each antibiotic from the periods 1985 to 1987 (n = 32) and 1995 to 1999 (n = 85) were evaluated in vitro with E tests (AB Biodisk; Remel, Lenexa, Kansas). RESULTS: Overall, the percent of P. aeruginosa corneal isolates sensitive in vitro to ofloxacin (106/117, 90.6%) was significantly less than to ciprofloxacin (113/117, 96.6%, P = .016) and trovafloxacin (113/117, 96.6%, P = .016). We observed trends of decreasing sensitivity to ciprofloxacin and trovafloxacin, which were not statistically significant. Sensitivity to ofloxacin remained unchanged; however, sensitivity to ofloxacin was always less than sensitivity to ciprofloxacin and trovafloxacin. CONCLUSION: Although in vitro susceptibilities may not correlate with in vivo efficacy, our data suggest that ciprofloxacin and trovafloxacin are superior to ofloxacin in the treatment of P. aeruginosa keratitis.

Original languageEnglish (US)
Pages (from-to)795-796
Number of pages2
JournalAmerican journal of ophthalmology
Issue number6
StatePublished - Jan 1 2001
Externally publishedYes


ASJC Scopus subject areas

  • Ophthalmology

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