Interesting. In an industrial situation, masks have to be fitted by someone who can check that they cover all important areas. My husband was responsible for this for several years, he was sent on a 'special course'

. The masks suggested are not cheap to make and usually R 4 one use only ........... but as suggested in the article, after 2 years a wider choice could be available.
I have found that putting mine on earlier than possibly required, then my long distance glasses over the nose area, helps with any steaming up. It's when I have to change from distance to readers inside that problems begin

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Where do you keep yours? I have 2 pairs in the car, 1 in the camper van, several in the house and those worn more often are laundered weekly.
I see more are buying those clear visor masks so that they can see and be understood.