Avoiding diagnostic lens fogging during the covid-19 era

David Pérez González*, Anat Loewenstein, Dan D. Gaton

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Since the advent of COVID-19, the patient’s use of a face mask hampers our visibility because there is a marked fogging in our view produced by the warm breath that escapes from the top of the patient’s mask and lands on the cooler surface of the lens. This panorama is sometimes so frustrating that we have been forced to ask our patients to remove their facemasks while examined, increasing the risk of being infected. We consider it essential to share this small pearl technique that we can apply in order to avoid fogging during the examination; it is easy, and most importantly, without putting at risk the patient or doctor’s health. In our opinion, this is the first material to propose this technique.

Original languageEnglish
Pages (from-to)4507-4509
Number of pages3
JournalClinical Ophthalmology
StatePublished - 2020
Externally publishedYes


  • Clarity
  • Diagnosis
  • Enhancement
  • Ophthalmology
  • Technique


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