Rule of Thirds Emotion

This photo is of an eye on the right side of the image. There is barely anything happening on the left side of the image, so the viewer's eyes are drawn to the eye.
This photo is primarily focused on the eye, which is on the right side of the image. This is within the rule of thirds, and the closeness to the eye helps portray a lot of emotion. By doing this, the viewer is mainly drawn to the eye.