Actually glasses are symmetrical and humans are drawn to symmetrical things and that’s why certain shapes or types of plants, etc, are more attractive to the human eye. Glasses, especially sunglasses, even out the face and make it appear more symmetrical.
So I work at a pet hospital, and we got a sick chameleon today that we had to treat. Needless to say we got a little attached to her and named her Susan. Her pillow was a cotton ball, her blankets were gauze squares and her head-warmer was a top of a glove filled with water. :)