Square lenses then.

Oval to lengthen the width of the eyes, and frame the face to make it appear narrower.

i think it goes for square faces you use round lenses to counter it and for a round face you use square lenses for the same reason

This is a great question, Grandma Roses. I have a square face and have wondered about this myself. I searched with Google - below are the top three results and a link to the website where I found each one: 1) Square A square face has a strong jaw line and a broad forehead, plus the width and length are in the same proportions. To make the square face look longer and soften the angles, try narrow frame styles, frames that have more width than depth and narrow ovals. http://www.allaboutvision.com/eyeglasses/eyeglasses_shape_color_analysis.htm 2) Square: Compliment a square face with frames that are slightly curved. The top of the frames should sit high enough on the face to downplay the jawline. http://www.framesdirect.com/face-shape.asp 3)Square - Square-faced types like Sophia Loren usually have broad, deep foreheads, wider jawlines and square chins. Because their faces are angular, they suit rounded or oval shaped glasses to soften their look. http://www.dailymail.co.uk/pages/live/articles/health/womenfamily.html?in_article_id=77314&in_page_id=1799 Google returned so many that I'll just post the results of the search and you can explore at your leisure: http://www.google.com/search?source=ig&hl=en&rlz=&q=eyeglass+shape+square+face&btnG=Google+Search