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Viral contamination during sequential phacoemulsification surgeries in an experimental model.
Roberto Pinto Coelho1, Tatiana Vannucci Garcia, Jayter Silva Paula
1Cataract Service, Department of Ophthalmology and Otorhinolaryngology, Faculdade de Medicina, Universidade de São Paulo, Ribeirão Preto, Brazil. robertopintocoelho@uol.com.br
Arquivos Brasileiros De Oftalmologia
|August 9, 2012
Summary
Piry virus genetic material was detected in non-contaminated eyes after phacoemulsification surgery, indicating cross-contamination via reused surgical equipment. This highlights potential risks during sequential cataract surgeries.
Area of Science:
- Ophthalmology
- Virology
- Surgical Safety
Background:
- Phacoemulsification is a common cataract surgery technique.
- Disposable accessories are used to minimize contamination risks.
- The potential for viral transmission via surgical instruments requires investigation.
Purpose of the Study:
- To assess Piry virus contamination on surgical instruments during sequential phacoemulsification procedures.
- To determine the incidence of viral transmission to non-contaminated eyes.
Main Methods:
- An experimental model using pigs' eyes, with alternating contamination and non-contamination.
- Phacoemulsification performed on eyes, with exchange of most accessories between surgeries.
- Maintenance of the hand piece and irrigation/aspiration systems between procedures.
Main Results:
- Piry virus genetic material was found in collector bags, tips, irrigation/aspiration systems, gloves, and anterior chambers.
- Contamination was detected in both initially contaminated and non-contaminated eyes.
- Scalpel samples showed contamination in 3/4 contaminated eyes but 0/4 non-contaminated eyes.
Conclusions:
- Viral genetic material was detected in non-contaminated eyes post-surgery.
- This demonstrates Piry virus transmission during sequential surgeries.
- Reuse of hand piece and irrigation/aspiration systems likely facilitated viral spread.
