If the movement of the eyeball muscles becomes impaired, your vision becomes blurry.

He was behaving like a hooligan.

He became a one-eyed person due to an accident.

Early cancer detection significantly improves the success rate of treatment.

Looking at his reaction, I tried to read his face.

She attempted facesitting on him.

He is playing the character of Bun.

Infrared astronomy provides a new perspective on understanding the universe.

This problem is difficult.

What does this sentence mean?