A 35-year-old male presents to the emergency department after being struck in the face with a baseball. He complains of double vision and an inability to look upward with his right eye. Clinical examination reveals restricted upward gaze (supraduction) of the right eye, suggestive of an orbital blow-out fracture with entrapment of the inferior rectus muscle. Based on this case, what is the primary function of the inferior rectus muscle that is disrupted due to its entrapment, leading to the patient’s inability to supraduct the eye?
