24/07/2020
WEARING A FACEMASK?
HERE ARE 4 WAYS TO AVOID FOGGY GLASSES.
While face masks help us avoid unknowingly transmitting coronavirus, millions of eyeglass wearers are discovering the nuisance of mask-induced foggy lenses.
With the Centers for Disease Control and Prevention (CDC) and the World Health Organization (WHO) now recommending the wearing of face masks to curb the spread of COVID-19, fogged-up glasses are a problem “affecting a large chunk of the population,”
Why are my glasses foggy?
Body heat and air flow lead to foggy lenses.
When you’re wearing a face mask, you repeatedly breathe out warm air. This air then can sneak out of the top of your mask and steam up the lenses of your glasses. Of course, this can make it difficult to see.
According to a study published in The Annals of The Royal College of Surgeons of England, a face mask directs much of the exhaled air upward.
The “misting” of lenses happens when warm water v***r from your breath lands on the cooler lenses, producing tiny droplets that scatter light and reduce the lenses’ ability to transmit contrast (when light colors remain light and dark colors remain dark).
“The droplets form because of the inherent surface tension between the water molecules,” the study’s authors said.
4 WAYS TO AVOID FOGGY GLASSES.
Now that you know why your lenses fog up, let’s review seven ways to prevent this fog when you’re wearing glasses and a face mask.
1. Wash the lenses with soapy water.
we recommend that before slipping on a face mask, you should wash your glasses or sunglasses lenses with soapy water and shake off the excess moisture. Then, let your glasses air dry or gently dry the lenses with a clean microfiber cloth.
2. Seal the mask: “If you place the double-sided tape between the inside of the mask and the bridge of your nose, it will create a better seal.
3. Make sure the mask fits well:
A loose-fitting mask lets exhaled air head toward your glasses, but a snugly fitting mask can shoot that air out of the bottom or sides of the mask and away from your glasses.
4. Adjust your glasses
If your glasses have nose pads, you can tweak the pads so that the frames sit slightly farther from your face.
