Science Insider
For people with glasses, wearing a mask can lead to their lenses fogging, reducing their vision. Do you know why this happens?
Vidunenahawula Website (National Institute of Fundamental Studies)
For people with glasses, wearing a mask can lead to their lenses fogging, reducing their vision. Do you know why this happens? As you breathe out, your warm breath shoots upwards out the top of the mask. If your mask fits loosely over your nose, your breath is certain to escape up to your glasses. When it hits the relatively colder surface of the lens and it cools down, forming condensation, or fogging.
