Streptococcal endophthalmitis from contaminated donor corneas after keratoplasty. Clinical and laboratory investigations

TitleStreptococcal endophthalmitis from contaminated donor corneas after keratoplasty. Clinical and laboratory investigations
Publication TypeJournal Article
Year of Publication1988
AuthorsBaer JC, Nirankari VS, Glaros DS
JournalArch Ophthalmol
Volume106
Issue4
Pagination517 - 20
Date PublishedApr
ISSN0003-9950 (Print) 0003-9950 (Linking)
Accession Number3281643
Keywords*Corneal Transplantation, *Streptococcal Infections / transmission, *Tissue Donors, Cornea / microbiology, Culture Media, Culture Techniques, Endophthalmitis / *etiology, Female, Gentamicins / pharmacology, Humans, Male, Middle Aged, Time Factors
Abstract

We report three cases of Streptococcus viridans endophthalmitis following penetrating keratoplasty in which S viridans was cultured from the recipient eye, McCarey-Kaufman (M-K) media, and corneoscleral rims. As a laboratory correlation, we investigated the ability of S viridans to survive in M-K medium supplemented with gentamicin. After M-K medium was inoculated with S viridans, it was stored overnight at 4 degrees C, after which the temperature was raised to 23 degrees C. Periodic colony counts were performed for up to 24 hours after warming. No killing occurred in the cold. Ten hours passed before there was one log reduction in the bacterial colony count. Organisms could still be cultured at 24 hours. We conclude that gentamicin alone may be inadequate prophlyaxis against S viridans contamination of donor corneas.

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