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Essilor Eye Lounge - Optifog & Eric...

"Fogging always occurs following a rapid change of temperature between a cold environment and a warm environment. The atmospheric humidity condenses into tiny droplets of water, more commonly known as “fog”..

...As Eric testifies, this is a common problem in Grise Fiord as well, which has an average temperature of -16 degrees. The Optifog lens, activated by a specific concentrate, the Optifog Activator, offers the best and long lasting protection against fogging."