Micro Eso eyeglasses are perfectly round, and are designed for small faces. At only 115mm across the frame front, this is a great, stylish, perfectly round frame for smaller faces. Made in France out of titanium, this is a high quality frame with unique styling. Finding a good round frame is difficult, but finding a good titanium round frame is nearly impossible.
If you are looking for an average sized round frame, try the Dolomiti Eyewear Collection of round frames.