How To Keep Glasses From Fogging With A Mask 15 Best Ways To Prevent Fog
And, why do your glasses fog up when you wear a mask? The simple answer: condensation, says Dr. Jesse Pelletier, MD, FACS, ophthalmologist and president of Halodine, a line of oral and nasal antiseptic products, “When the warm and moist air is trapped behind your spectacles, microscopic water droplets collect on the cool surface of the lens, forming a layer of fog that makes it difficult to see.” “Flow physics” describes the process of air escaping from a mask, he adds, “Inhalation generates low pressure in the interior region of the face mask and seals perimeter leaks....