Attachment of Pseudomonas to Human-Worn, Disposable Etafilcon A Contact Lenses
| Autor: | Miguel F. Refojo, Samuel F. Boles, Fee-Lai Leong |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
biology
Chemistry Pseudomonas Colony Count Microbial Statistical difference Contact Lenses Hydrophilic Refractive Errors biology.organism_classification corneal ulcer medicine.disease Bacterial Adhesion Single strain law.invention Microbiology Lens (optics) Contact lens Ophthalmology law medicine Humans sense organs Disposable Equipment Nuclear chemistry |
| Zdroj: | Cornea. 11:47-52 |
| ISSN: | 0277-3740 |
| DOI: | 10.1097/00003226-199201000-00008 |
| Popis: | After 7 days of continuous wear, Acuvue (Vistakon, Jacksonville, FL, U.S.A.; etafilcon A) lenses were soaked in a Pseudomonas aeruginosa suspension (1.4 x 10(8) cfu/ml). New Acuvue lenses served as controls. A single strain of P aeruginosa harvested from a human corneal ulcer was used throughout the experiment. Lenses were examined by culture and scanning electron microscopy (SEM). We found significantly greater (p less than 0.05) bacterial attachment to new Acuvue lenses [culture, 3.1 x 10(4) (+/- 0.82 x 10(4)) cfu/mm2; SEM, 2.6 x 10(4) (+/- 0.47 x 10(4)) bacteria/mm2] compared with those previously worn [culture, 1.0 x 10(4) (+/- 0.17 x 10(4)) cfu/mm2; SEM, 0.73 x 10(4) (+/- 0.21 x 10(4)) bacteria/mm2]. No statistical difference was found among the individuals. Our findings demonstrate that the biological coating resulting from 1 week of continuous contact lens wear restricts P. aeruginosa attachment to the Acuvue lens when comparing new and used lenses. |
| Databáze: | OpenAIRE |
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