Polarized sunglasses are NOT good for flying floats, as noted. Otherwise, they may interfere with some displays.
A far better solution, in my book, is the Serengeti line of sunglasses. The propriatery tint of these things is really magic in reducing glare, and cutting through the haze. They are also great UV blockers, which is a big deal if you care about your eyes.
Serengetis are not cheap sunglasses, as immortilized by ZZ Top, but they last forever. They're glass, not plastic, and the coating is hard.
Once I bought a pair of sunglasses that an optometrist assured me were "identical tints to the Serengetis" for less money, of course. Took em back within two days, and popped for another pair of Serengetis. Only reason I changed was my prescription changed.
Yes, Serengetis can be ordered in prescription. Really spendy, but well worth it, if you fly a lot.
I've worn em now for nigh on to twenty years (two pairs). I wouldn't use anything else.
MTV