A long, diamond like shaped faces usually are narrow at the eye line and jawline. As a diamond, this face is among the rare. Focusing to highlight the eyes will widens the sidelines, creating softer and rounder effect.
An oblong face is longer than its width, and has a longer nose and cheek line. Find a frame that has more depth, or contrasting colors and/or decorations. A fit that has a shorter noes bridge may also help the face appear shorter and balanced.
A round face misses the angles but features curved lines. To make a rounder face appear thinner and longer, try an angular or narrow frame since it helps lengthen and widen the eyes. A frame that shows a clearer shape such as a rectangular shape helps accent the look as well.
A square face often looks sharp, and has a strong jaw line with a broad forehead. By choosing a frame that elongates the face, it soften the angles of face and shape of cheekbone area. One can show more rounder look with a thick-frame. Choosing a gold rimmed pair can also give a more sophisticated look.
A triangular face (aka pear) shape is often characterized by a small or narrow forehead. Choosing a roundish frame or one that accents the top part of the glasses will draw less attention to the prominent jawline. For a more softer look, try lighter colors and materials that have a light and airy affect–rimless glasses may be an option.
The oval face is longer and wider in fit, and quite proportional. While the face shape goes well with the most of the styles of glasses, wider-frame helps with the focus on cheekbones, lips, and chin to feature them.