The thick framed glasses that are now 'popular' and are seen being worn by many hipsters/people trying to be 'stylish'.

And they're actually called BUDDY HOLLYS/BUDDY HOLLY GLASSES.

A cultural and aesthetic mind-state that prioritizes making money, even as an “underground” or “radical” creator. The work isn’t made for money, but it’s the money that matters the most.

Frequently thought to be worn only by emos. Black glasses with thick plastic frames. Can look attractive if worn right. Normally people presume that -
a. If you wear these glasses, you are an emo/poser
b. People who wear these glasses wear them purely for the look. They are never prescription.
However this is wrong. I know because I wear black, thick framed plastic nerdglasses. I am not an emo, (though I have nothing against emos except for the fact that people stereotype me as one) in fact I got these glasses as a mark of respect to The Smiths, one of my favoruite (definitely not emo) bands, because Morrissey used to wear nerdglasses. This probably does make me a poser. But not an emo.
And my glasses are also prescription. I can't see without them. I just decided to get a nice and vaguely original pair if I had to have them at all.

Nerd glasses are either glasses that have lenses or don't. When you're wearing ones with lenses, they look a bit more realistic. When you're wearing ones without lenses, you look like a nerd, meaning you also pretend to be an intelligent person, since they wear glasses too.