I still don’t understand. What stops all the nasty particles and droplets in the air from simply whizzing around the sides of the plastic shield when the wearer breathes in and out? Maybe someone can explain …
Visor

I still don’t understand. What stops all the nasty particles and droplets in the air from simply whizzing around the sides of the plastic shield when the wearer breathes in and out? Maybe someone can explain …
You are right – Heather’s friend who works in ITU says these face shields are only useful in protecting the eyes from direct splashes/spray – hence why medics wear a face mask underneath the visor.
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