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Statement of Antibiotic Susceptibility:
There are no standards for interpreting the susceptibility of bacteria from ophthalmic infections. These infections are treated topically or by direct injection. Laboratories can use the susceptibility standards for the treatment of systemic infections (CLSI/NCCLS) if it is assumed that the antibiotic concentrations achieved in the ocular tissues by topical application or the direct injection route is equal or greater than antibiotic concentrations achieved in the body tissues by systemic routes. It is our experience that resistance is over-reported for ocular bacterial isolates using the systemic standards. Our results were tabulated with "intermediate susceptible" values considered to be "susceptible " values.These tables of susceptibilities (endophthalmitis, keratitis, conjunctivitis/ blepharitis) should be reviewed with the aforementioned understanding when treating ocular infections.