I thought the Minima had plastic lenses, given that it is based on a swim goggle, so I was surprised when you said they were glass. If I had known that I may not have bought the Sphera. I have one question for you though. Is there enough room between the lens and your eye to fit a prescription insert. My usual mask has inserts from Prescription Dive Masks. (Given the plastic lenses of the Sphera I didn't even bother to ask and just planned on having blurry vision anyway.) They say they can put them into any mask. Do you think they'd work in a Minima?
Thanks for setting me straight.
JB