You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is A patient Rasmu presents with eye deviated laterally and slightly downward. The upward gaze is impaired and medial rotation is not possible. Which nerve is involved. and explain in detail?
Ans. is 'a' i.e. III C.N Muscular supply of Extraocular musclesAll muscular of the eye are supplied by the III C.N except the superior oblique (by IV C.N ) & Lateral rectus (by VI C.N).Paralysis of III C.N would spare the sup. Oblique and the lateral rectus and the unopposed action would pull the eye outwards & downwardsAction of Superior oblique- downwards & laterallyAction of Lateral rectus - laterally