Step 1: Identifying the VI cranial nerve.
The VI cranial nerve is the abducens nerve. It is a motor nerve responsible for controlling the lateral rectus muscle of the eye.
Step 2: Function of abducens nerve.
The lateral rectus muscle helps in abducting the eyeball, that is, moving the eye outward away from the midline.
Step 3: Effect of damage.
Damage to the abducens nerve leads to impaired lateral movement of the eye, causing difficulty in eye movement.
Step 4: Conclusion.
Therefore, damage to the VI cranial nerve affects eye movements.