Comments about Tusa Anti Fog Film, Fits any 2-Window mask:

I knew I would be taking a risk buying this product but decided to roll the dice.
I use a mask with RX lenses and feared the film may interfer with the script. The Tusa customer rep claimed it would/should not as it is a clear film. Can't confirm or deny that point.
I found out the hard way that the curvature (concave)of my lense would not allow the film to adhere. After several attempts the film wrinkled...ruined!
If you try them consider trimming the film down to assure it fits even if there is an exposed ring. Maybe that will help...Tusa apparently has not run into this issue yet. The joy of new product testing I guess.
Good news is...The one good strip fit perfectly in my wife's non-RX mask that had a lense larger than the film