Wearing glasses to see a smaller face may be due to the refraction of light by the lenses of glasses, which changes the outline and lines of the face, thus creating a visual illusion. At the same time, the frame of the glasses will also have a certain shielding and foil effect on the size of the face, making the face look smaller.

In addition, wearing glasses to see the face smaller may also be related to personal psychological factors. When we wear glasses, there may be a change in our self-cognition, which will affect our judgment of our own image. For example, we may feel more temperament and culture after wearing glasses, which also affects the size of our face.

It should be noted that wearing glasses will not really change the size of the face, but will create a certain illusion in the vision. If you really want to change the face size, you need to do it through proper diet, exercise and plastic surgery.