You know, I don't particularly like those glasses on him, either, but he can't exactly find a pair of big goggle-like 1980s aviators. What Perry is wearing is what's available now.
That's total BS. Go to any decent optical shop and you will find a wide variety of frames from the thick wanabe hipster glasses that Perry is now wearing to nearly invisible rimless styles. Here's an example of what's available: http://www.viziooptic.com/mens-designer-eyeglasses
Again, leaders lead, followers follow. When it comes to eye glasses, Perry is a follower. I fear that Perry as POTUS would also be a follower in that rather than taking a principled stand, he would follow the advice of Barbour, Rove, et al., and blow the best opportunity for conservative change since Maximus Reagan.