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Aerosol generation through phacoemulsification.

Hanbin Lee1, Hasan Naveed, Zahra Ashena

  • 1From the Sussex Eye Hospital, Brighton & Sussex University Hospitals NHS Trust (Lee, Naveed, Ashena, Nanavaty), and Brighton & Sussex Medical School, University of Sussex (Naveed, Nanavaty), Brighton, United Kingdom.

Journal of Cataract and Refractive Surgery
|June 23, 2020
PubMed
Summary
This summary is machine-generated.

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Phacoemulsification, a common cataract surgery, does not generate significant aerosols of 10 micrometers or less. This finding is consistent across various settings, including torsional and longitudinal modes, with or without hydroxypropyl methylcellulose.

Area of Science:

  • Ophthalmology
  • Surgical Technology
  • Aerosol Science

Background:

  • Cataract surgery, particularly phacoemulsification, is a widely performed ophthalmic procedure.
  • Understanding potential aerosol generation during surgical procedures is crucial for infection control, especially in the context of airborne pathogens.
  • Previous studies have raised concerns about aerosol production during various medical interventions.

Purpose of the Study:

  • To experimentally evaluate whether phacoemulsification generates aerosols measuring 10 micrometers or less.
  • To assess aerosol generation across different phacoemulsification settings and conditions.

Main Methods:

  • An ex vivo experimental model using 15 porcine eyes was employed.
  • An optical particle counter measured particles ≤ 10 µm under dynamic theater conditions.

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  • Aerosol generation was measured during three phacoemulsification settings: 80% longitudinal power, 100% torsional power, and 80% longitudinal power with hydroxypropyl methylcellulose (HPMC).

    • Main Results:

    • No significant difference in aerosol generation was observed between torsional, longitudinal, and longitudinal with HPMC settings (P > .01).
    • Combined data showed no significant difference in aerosols ≤ 10 µm when comparing pre-phacoemulsification and during phacoemulsification (1209 vs 1131.55, P = .60).
    • Specific analysis for particles ≤ 5 µm and 5-10 µm also revealed no significant differences.

    Conclusions:

    • Phacoemulsification, under continuous power with 80% longitudinal, 100% torsional, or 80% longitudinal with HPMC, does not generate significant aerosols of 10 µm or less.
    • The findings suggest that standard phacoemulsification may not pose a substantial risk for aerosol transmission of particles in this size range.