Sorry, You Two-Eyed Cretins

 Arwa Mahdawi / The Guardian:

Wearing glasses may really mean you're smarter, major study finds  —  It's not just a pop culture trope - a University of Edinburgh study has found intelligent people are 30% more likely to have genes related to poor eyesight  —  If you wear glasses I've got some good news: you may well be smarter than the average person.

There've been other studies that indicate the same thing, one of them made by the Israeli Army some time ago, if memory serves (& of course an intelligent person's memory serves better than yours, dimbulbs) 'though I don't believe any of them went to a genetic level.