Never let a person who don't need glasses design them. You might have seen the Google Glass design concept create by Sourcebits. It has been shared by quite a lot of sites lately. And most of these sites praise them as being more stylish.
More here: http://goo.gl/hpUO0a
The problem is that these glasses appears to have been designed like sunglasses. As something that people should focus on instead of something that blends with the rest of your face.
You see, for people who wear glasses all the time (like I do, just look at my profile pic), you want a pair of glasses that look like they are a part of your face. What that shape is depends entirely on how your face looks.
In my case, my eye-brows are very light, so wearing glasses with a thick black frame wouldn't work. They would take away all the attention from me and put them on the frame itself.
Think of it like this: When you meet someone face-to-face, you want your eyes to meet, not the frame of their glasses.
For other people, especially if you have heavy black eye-brows (and a beard) thick glasses might work well because then the frame creates a focus area for your eyes to look.
It's all about eye-contact. When people see you, do they see your glasses or do they see your face?
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