<prompt> Action of right superior oblique muscle is-Dextro depressionDextro elevationLevo elevationLevo depression  <response>: Levodepression is movement to the left and downside. It is caused by simultaneous action of left inferior rectus and right superior oblique muscle Dextroelevation: Right superior rectus and left inferior oblique Levoelevation: Left superior rectus and right Inferior oblique Dextroversion: Right lateral rectus and left medial rectus Levoversion: Left lateral rectus and right medial rectus Dextrodepression: Right inferior rectus and left superior oblique Ref; A K Khurana ; 6 th edition ; Page no: 339 