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. 1987 Aug;71(8):598–601. doi: 10.1136/bjo.71.8.598

Corneal and intraocular penetration of topical and subconjunctival fusidic acid.

P B Taylor 1, E M Burd 1, K F Tabbara 1
PMCID: PMC1041239  PMID: 3651375

Abstract

Corneal tissue absorption and intraocular penetration of fusidic acid were assessed in the rabbit after topical or subconjunctival application. Corneal tissue levels of fusidic acid one hour after the last topical application of the drug were well above the minimum inhibitory concentrations (MICs) for most Gram-positive and many Gram-negative organisms. Adequate levels were achieved in the aqueous at one hour following the last topical application, but no significant levels were detected in the vitreous. The corneal tissue and aqueous levels declined at 12 and 24 hours following the last drug application, however, corneal tissue levels at 24 hours were considered to be above the MICs for most Gram-positive organisms. A single subconjunctival injection of 100 mg of fusidic acid produced levels above the MICs of most organisms in the cornea, aqueous, and vitreous which persisted over 24 hours, but subconjunctival injection of fusidic acid at this concentration resulted in conjunctival necrosis and corneal decompensation. Fusidic acid penetrates well into avascular tissue and fully penetrates corneas with both intact and debrided epithelium, as evidenced by the intracameral drug levels. Good corneal penetration and absence of known topical toxicity make fusidic acid suitable for the treatment of microbial keratitis caused by susceptible organisms.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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