Dr. Barbara Horn, president of the American Optometric Association, said she’s become much more conscious of the cleanliness of her eyewear during the pandemic. Another reason: People can actually go blind from rubbing their eyes because they can break down the front layer of the cornea, Horn warned. Bottom line: Our research shows that the type of face covering you buy matters, as they vary significantly in effectiveness . Make sure to clean the nose pads, which touch the face constantly and can get dirty, and the edge where the lens meets the frame: “Lots of dust and debris can get trapped in that little space,” Horn said. Ultimately, glasses and masks don't mix - so none of the options are a magic solution for spectacle-wearers. But some are much better than others.

Corona Beer Glasses, hand cut, recycled, Corona Light, set of 2 Corona Beer Glasses, hand cut, recycled, Corona Light, set of 2

The largest improvement was an increase from 7% filtration to 27%, but most only improved marginally. However, bear in mind that over a longer period of time it's possible the fabric will wear and become slightly less effective. So if your mask is starting to look worn out it's time to replace it. Again, all the products passed this test. Any shrinkage was minimal and not enough to affect the fit. Ease of use I’m certainly not saying glasses are the main culprit by any means, but you just always want to be careful — making sure you’re cognizant of the fact that glasses can transfer (the virus) and be aware of how to clean them properly.”Horn doesn’t need prescription glasses, but wears sunglasses constantly and makes sure to clean them after a trip to the grocery store or other places where she's around other people. Maskari said its mask has been tested by Swiss labs, revealing good filtration results, and has been approved as a community mask in Switzerland, so were surprised by our results. It noted that its masks are treated with antimicrobial substance, that Which? tests do not take into account.

PerfectDraft Corona Extra Lager Beer keg for Philips Machine PerfectDraft Corona Extra Lager Beer keg for Philips Machine

It's superb at filtering particles – 99.9% before washing, and 94% after five washes. And it’s still light and easy to breathe in. There are advantages to silk– it’s meant to be gentler on your skin as it’s less occlusive than other fabrics, and it’s hydrophobic so it repels water droplets. Plus, this is our most breathable Best Buy. They're able to filter 93.8% of tiny particles when new and this doesn’t diminish after five washes.

The best face coverings were able to filter 99.9% of particles, while the worst only managed a paltry 7%' Filtration efficiency is measured based on the percentage of colony-forming units of bacteria that were able to pass through the face covering. As well as core performance on filtration and breathability, we assessed how comfortable and well-fitting the masks were, and how they stood up to repeated use and washing.