He underwent surgery on his intraocular muscle.

He underwent surgery on his extraocular muscle.

An electrooculogram is a test method to record the movement of the eyeball.

He was always envious of others' success, saying that the grass is always greener on the other side.

We should always remember the power of Kannon in difficult times.

He is truly demonstrating talent that surpasses his master, just as the saying 'the student has surpassed his or her teacher' goes.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.