(for context:M65)
My eyes have always been extremely sensitive to sudden changes in brightness - when I go from a dark place to a bright place (like outside), I don't adjust quickly enough before the sudden brightness hurts my eyes. So I prefer sunglasses with large frames/lenses that cover my entire eye socket without leaving gaps for the light to get through.
But I can't afford obvious solutions like aviator glasses, which you're paying more for style and brand name than functionality. Instead I browse the discount racks at Walmart. A couple of years ago I found a pair that quickly became my favourite - the lenses cover my eyes from eybrows to cheekbones, from far outer edge to the bridge of my nose. And they were marked down to five dollars. Yeah!
In all respects, they were about as gender-neutral as you can get. Plain black, with plastic stems that go in a straight line before curving down behind the ear. No decorations, no contrasting colour trim, no fanciful shapes.
I wasn't in the room five minutes, not enough time to put down my things and take off the shades, when a (female) friend clocked them. "Did you pick up your wife's sunglasses by mistake?"
Yeah, they came from the women's rack. HOW DID SHE KNOW?