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[Retrospective study of the prevalence and sensitivity to antibiotics of bacteria isolated from ocular samplings]
L Schlegel1, C Chaumeil, S Quesnot
1Laboratoire de Biologie, Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts, Paris.
Purpose:
This study evaluates the variability of the bacterial flora and the changes in their antibiotics sensitivity tests between 1988 and 1993 in 46090 specimens (conjunctival cultures, corneal scrapings, vitreous, aqueous humour, ocular foreign bodies).
Methods:
The specimens were cultured and antibiotics sensitivity test was carried out on the pathogens only (3309 strains).
Results:
Streptococci (36.1%) and Staphylococcus aureus (35.6%) are the most frequent species with Enterobacteriaceae (12.1%) and Haemophilus (7.8%). S. aureus and Streptococcus pneumoniae are more prevalent with decreasing values for other bacteria (Khi-2 of trend, Mantel's extension, p < 0.05). Antibiotics sensitivity yield expected results without any remarkable changes during the study. No multi-resistant strain was isolated.
Conclusion:
The increase of number of S. aureus and S. pneumoniae is the major change noted in pathogens found from our eye samples.