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Evaluating and Managing the Microbial Contamination of Eye Drops: A Two-Phase Hospital-Based Study

Léa Roquefeuil1, Katia Iskandar2,3, Christine Roques4,5

  • 1Unité de Préparations Stériles Ophtalmologiques et Oncologiques, GHU AP-HP Centre-Université de Paris Cité-Site Cochin, 27 Rue du Faubourg Saint-Jacques, 75014 Paris, France.

Pharmaceutics
|July 27, 2024
PubMed

Insights

New eye drop packaging with antimicrobial technology significantly reduces microbial contamination, protecting patients from infections. This green technology shows promising results in preventing contamination of eye drop containers.

Area of Science:

  • Ophthalmology
  • Microbiology
  • Materials Science

Background:

  • Microbial contamination of eye drop containers is a significant concern, with contamination rates ranging from 7.7% to 100%.
  • Preventing contamination is crucial for patient safety and requires innovative solutions.

Purpose of the Study:

  • To compare the antimicrobial efficiency and practical use of standard eye drop packaging versus a novel container with integrated antimicrobial technology.
  • To identify microbial contaminants present on commonly used eye drops.

Main Methods:

  • A two-phase study was conducted: Phase 1 (in situ) identified microbial contaminants in hospital and community eye drops (n=110).
  • Phase 2 (in vitro) assessed antimicrobial efficacy using JIS Z2801 standards on packaging with Pylote SAS antimicrobial technology.
  • Practical usability tests were also performed.

Main Results:

  • The most prevalent bacteria identified were *Staphylococcus* species. *Candida parapsilosis* was found in one sample and on its cap/tip.
  • The Pylote SAS packaging demonstrated over a one-log reduction in *Staphylococcus aureus* and *Pseudomonas aeruginosa* counts after 24 hours.
  • Practical tests confirmed satisfactory usability of the new packaging.

Conclusions:

  • The Pylote SAS antimicrobial mineral oxide technology shows significant potential for reducing microbial contamination on eye drop container tips and caps.
  • This technology offers a promising combination of effectiveness, safety, and sustainability for preventing eye drop-related infections.
Keywords:
antimicrobial surfacecapceramicdropper tipeye dropsmicrobial contaminationmineral oxide

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