Question

During case history, your 47 year-old Caucasian female patient reports to you that she occasionally manifests double vision in certain fields of gaze. She is taking Tapazole® for Grave's disease and has no other ocular or systemic health issues. Restriction of which of the following extraocular muscles would you MOST likely expect to be causing her symptoms?

-Lateral rectus
-Superior rectus
-Superior oblique
-Inferior oblique
-Inferior rectus
-Medial rectus

Answer 1

The medial rectus muscle is the most likely cause of the patient's symptoms of double vision in certain fields of gaze.

Step-by-step explanation:

The extraocular muscle most likely to be causing the patient's symptoms of double vision in certain fields of gaze is the medial rectus muscle. The medial rectus muscle is responsible for inward movement of the eye, or adduction. When the medial rectus muscle is restricted or not functioning properly, it can result in the eyes not moving in perfect coordination, leading to double vision.