Action of superior oblique is following except:
A i.e. Extoion Superior oblique - into, depress & abduct Q the eye in primary position; whereas inferior oblique-exto, elevate & abduct Q the eye in primary position. Muscle Action Superior oblique & Superior rectus IntoorsQ Inferior oblique & Inferior rectus ExtoorsQ Mnemonic - '!Superiors = Intoors & Inferiors= Extoors" Medial rectus + Superior & Inferior rectus AdductorsQ; Lateral rectus + Superior & AbductorsQ Inferior oblique Mnemonic - "BOLR" i.e. aBductor = Oblique (sup. & inf.), + Lateral Rectus Mnemonic - "MIS RED" i.e. Medial/Inferior/ Superior REctus are aDDuctors Superior rectus & Inferior oblique Elevators Inferior rectus & Superior oblique Depressor In aBducted eye ObliquesQ are chief toors Mnemonic= "BORD" In aDDucted eye RectiQ are chief toors Action of individual muscles Muscle In primary Abducted Adducted position eye eye 1. Superior DepressionQ Only Only oblique A bductionQ intoion depression IntoionQ 2. Inferior Elevation Only Only oblique Abduction extoion elevation Extoion 3. Inferior Depression Only Only rectus Adduction depression extoion Extoion 4. Superior Elevation Only Only rectus Adduction elevation intoion Intoion 5. Medial rectus Only adduction ? 6. Lateral rectus Only abduction - ? Mn ="SO BID BEXT IFO=So BID BEST IPO" = Superior Oblique = aBduction, Intorsion, Depression; Inferior Oblique = aBduction, Elevation, Extorsion
Extoion
Depression
Abduction
Intoion