How to determine the rotation of the eye? Here we will provide a video as a reference to explain the concept of eye rotation.

Note:

The eye rotates with the contraction of the pupil, and the force of the eye rotates in two forms: strong or weak. We can clearly see through the video of eye movements: when the turning force is strong, the surface sand forms a strong vortex motion and the surface sand becomes blurred. When the rotation is completed, the surface sand recovers quickly; when the rotation force is weak, the surface sand forms a vortex motion fatigue. When the rotation is completed, the surface sand recovery speed is slow.