Survival of contaminating bacteria in over-the-counter artificial tears.
J Am Optom Assoc
; 67(11): 676-80, 1996 Nov.
Article
em En
| MEDLINE
| ID: mdl-8979661
ABSTRACT
BACKGROUND:
The use of OTC artificial tears is becoming increasingly widespread. Unintentional contamination of artificial tear products potentiates a risk of developing bacterial keratitis or exacerbating an existing eye infection. Presently, no published study has investigated recovery from bacterial contamination of artificial tear products.METHODS:
Four different over-the-counter (OTC) artificial tear products were contaminated with two types of bacteria. Staphylococcus aureus and pseudomonas aeruginosa were analyzed for the survivability of the microorganisms at various times following contamination.RESULTS:
In this cross-sectional study, it was found that all the preserved brands showed a significant recovery rate from contamination compared to the preservative-free brand. After 9 hours, the preservative-free brand did not completely regain sterility after contamination with either bacteria.CONCLUSIONS:
This study indicates that preserved artificial tears recover from bacterial contamination at a significantly faster rate than preservative-free products. It is likely that the recovery from bacterial contamination is not solely attributed to the preservative, but that other variables may contribute.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Soluções Oftálmicas
/
Pseudomonas aeruginosa
/
Staphylococcus aureus
/
Contaminação de Medicamentos
Tipo de estudo:
Observational_studies
/
Prevalence_studies
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Risk_factors_studies
Idioma:
En
Revista:
J Am Optom Assoc
Ano de publicação:
1996
Tipo de documento:
Article
País de afiliação:
Estados Unidos