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How to Prevent Your Glasses From Fogging Up When Wearing a Mask
Healthcare pros use a simple pre-soaping technique to keep their vision clear
Here's the simple step healthcare professionals (and savvy tradespeople) take to keep their eyeglasses fog-free while wearing a facemask.
Image source: Envo Mask
First off, understand what that fog on your lenses is. As you exhale through the mask, some of that air goes straight upwards. The water vapor droplets from your warm, exhaled breath condense on the cooler surface of the lenses, forming that fog.
Image source: Eyeglass Factory Outlet
If the droplets were unable to stick to the mask, there would be no fog. What's needed is a surfactant--like simple soap.
Photo by Daniele Levis Pelusi on Unsplash
Thus:
Immediately before wearing a face mask, wash the spectacles with soapy water and shake off the excess. Then, let the spectacles air dry or gently dry off the lenses with a soft tissue before putting them back on. Now the spectacle lenses should not mist up when the face mask is worn.
This should come in handy not only when you're wearing a mask for COVID-19 protection--but when all of this is finally over and you're back in your shop, wearing a mask for dust protection. Gosh, that sounds like such a luxury right now.
This information is from the National Institutes of Health.
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Comments
You can use shaving foam - apply it and then erase with towel. It is also works well in bathroom. But maybe not so clear then soap
This is why we just circulate a viral particle back to our eyes which dump the collected charged particles into our nostrils and keep up the whole pattern over and over again. You can wear a mask all day, but if your eyes get particles, then your body is very very efficient at collecting them and distributing them into your nasal passages. Funny thing is that we allied learned this stuff in basic health way back in high school and the public just dumps that education down the drain.
To add: you /have/ to mould the noseclip to your face, which is something the person in the top picture has not done (the clip is mostly straight on both sides of the nose).
Really, it's important to do a fit test after putting on the mask. Place two hands over the mask, exhale sharply and pay attention to escaping air. If air comes out next to your nose, remould the noseclip and try again.
Um, if your glasses fog up when you exhale your mask is not set up properly, especially not with the respirator shown in the picture which has a exhale valve.
If moist air can get out that easy, dust (and corona) can get in when you breathe in again.