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Related Experiment Videos

Applanation tonometer tip sterilization for adenovirus type 8.

E R Craven1, S L Butler, J P McCulley

  • 1Department of Ophthalmology, University of Texas Health Science Center at Dallas.

Ophthalmology
|December 1, 1987
PubMed
Summary

Ophthalmologists use various methods to sterilize applanation tonometer tips. Diluted sodium hypochlorite and alcohol wipes are most common, effectively removing adenovirus.

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Area of Science:

  • Ophthalmology
  • Infectious Disease Control
  • Medical Device Sterilization

Background:

  • Sterilization of ophthalmic instruments is crucial for preventing infections.
  • Applanation tonometer tips require effective disinfection between patient uses.
  • Current sterilization practices among ophthalmologists vary widely.

Purpose of the Study:

  • To identify common sterilization methods for applanation tonometer tips used by ophthalmologists.
  • To evaluate the efficacy of frequently used sterilization techniques against adenovirus.

Main Methods:

  • Survey of 89 ophthalmologists in the Dallas-Fort Worth area regarding sterilization practices.
  • Laboratory evaluation of six common sterilization methods against type 8 adenovirus on tonometer tips.

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Main Results:

  • Alcohol wipes (26%) and diluted sodium hypochlorite soaks (23%) were the most popular sterilization methods.
  • Effective adenovirus inactivation/removal was achieved with 15-minute soaks in diluted sodium hypochlorite, 3% hydrogen peroxide, or 70% isopropyl alcohol.
  • Wiping with alcohol prep pads, 1:1000 merthiolate, or dry tissues also demonstrated efficacy.

Conclusions:

  • Diluted sodium hypochlorite, hydrogen peroxide, and isopropyl alcohol are effective for applanation tonometer tip sterilization.
  • Standardized, effective sterilization protocols are needed to ensure patient safety in ophthalmology.