This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
[{'content': 'In the normal human right eye, the peripheral field of vision is usually least: \nSelect and explain. \nA. On the left side (nasally), B. In the downward direction, C. In the upward direction, D. On the right side (temporally)', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The field of vision is 50 degree superiorly, 60 degree nasally, 70 degree inferiorly and 90 degree temporally. Ref: Textbook of Ophthalmology By Nema, 3rd Edition, Page 73; Comprehensive Ophthalmology By AK Khurana, 2nd Edition, Page 37', 'role': 'assistant'}]