This is the tool i designed ti prevent my glasses getting cloudy because of the Mask.In the second picture i will show how breathe flow through different type of mask protection. That is a simulation from the Institute of Fluid Dynamics and Heat Transfer, TU Wien, Vienna, AustriaAs you can see the breathe flows thruogh masks and part of the air flow go against your eyes which are a sensible spot.

My tool let the air go down throught the neck instead, so it doesn't change the function of the mask but prevent your glasses from getting cloudy.hope you lke it.It' let a small window between the chin and the mask so the breathe can flow down to the neck instaed of coming up and steam your glasses.i know it's not a perfect solution, still think about this:th bus driver wear both mask and glasse; you would wish him to drive with the mask lowered or with cloudy glasses?

it can be wear both sides, if the hooks are upside the window will be smaller ( useful if you war a strict mask) or downside if you need a larger space to breathe.i decided to print it in wood filament, but it can be made also in PLA, ABS, filaflex or resin.