Eyewear as an accessory is just as much about style as it is about function. Since it sits on your face, a major focal point, properly selected eyewear can enhance your facial features and tie a look together. As a rule for sunglasses or eyewear in general - if you have a more square face, opt for more rounded lenses to balance out your visage. The opposite is true for men with rounded faces – choose more squared lenses to look your best.