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[Hydrophilic contact lenses and pathogenic microorganisms]
Journal Francais D'Ophtalmologie
|January 1, 1986
Summary
Contaminated hydrophilic contact lenses pose a risk, with fungi and bacteria like Pseudomonas aeruginosa found. Lens solutions from brand B showed higher bacterial contamination than brand C, highlighting preservative importance.
Area of Science:
- Microbiology
- Ophthalmology
- Materials Science
Context:
- Hydrophilic contact lenses are widely used for vision correction.
- Microbial contamination of contact lenses and solutions is a significant concern for eye health.
- Previous studies have indicated potential risks associated with contact lens wear.
Purpose:
- To investigate the microbial contamination of hydrophilic contact lenses and their associated solutions.
- To identify specific bacterial and fungal species present on contaminated lenses.
- To compare the bacterial load and types in two different brands of contact lens solutions.
Summary:
- A study analyzed 243 hydrophilic contact lenses, finding 65 macroscopically abnormal and 100 infected with fungi.
- Bacterial analysis isolated 30 strains, including Pseudomonas sp. and Serratia liquefaciens.
- A second study on 107 lens solutions revealed significant bacterial contamination, with brand B having higher levels (12 x 10(7) bacteria/ml) than brand C (5 x 10(7) bacteria/ml).
- Pseudomonas aeruginosa was notably prevalent in contaminated samples, particularly from brand B.
Impact:
- Highlights the critical role of Pseudomonas aeruginosa in contact lens-related corneal ulcers.
- Underscores the importance of contact lens solution composition in preventing microbial growth.
- Emphasizes the necessity and effectiveness of preservatives in maintaining lens solution hygiene and safety.