While there may not be a magic bullet to fix the problem, Bower says there are a number of things that help. One is wearing a mask that is tight fitting or adjustable around the nose.
Shopko Optical also sells a mask de-fogging kit produced by Zeiss. It includes a solution that can be sprayed onto glasses to prevent fogging, along with a microfiber cloth. Staff at the store say customers have been pleased with the results they have seen. ​