Final answer:
The CT is worse in the paretic eye during secondary deviation. The CT is largest in the upward gaze. The UA muscle is the medial rectus muscle of the right eye.
Step-by-step explanation:
The CT (conjugate torsion) is worse in the paretic eye during secondary deviation. This means that when the paretic eye is fixating, it will have greater CT. The CT is largest in the field of gaze that requires the paretic eye to fixate. In this case, the paretic eye is fixating in the upward gaze, so the CT will be largest in the upward gaze.
The UA (Unilateral Adductor) muscle is the medial rectus muscle of the right eye. It is responsible for adducting or moving the eye medially, towards the nose.