Oval shaped face selection
An oval face shape is considered to be the easiest to make an eyewear purchase decision because of its balanced proportions. Oval means that the face length is greater than the width of the cheekbones, and the forehead is greater than the jawline. The angle of the jaw is rounded rather than sharp.
To maintain the natural balance of an oval face shape, look for frames that are as wide as (or wider than) the broadest part of the face. Walnut-shaped frames that are not too deep or narrow are a very good choice. You should avoid oversized frames.