9 diagnostic positions of gaze, & a shortcut to remembering the yolk muscles in the cardinal positions Extraocular muscles & their actions • Extraocular muscles & ... Extraocular movements • Extraocular movements:...
it depends. if the initial movement is say abduction, then the elevation will primarily be by the superior rectus. if the eyes move into dextroelevation directly from the primary position, then a combination of muscles act simultaneously to bring about this movement
@@ophthalmologypearls But if this movement occurs from a combiantion of muscles why do we use it to test the superior rectus (in H test) and why is action mentioned as only by superior rectus and inferior oblique?
In dextroelevation, the abduction is carried out by the lateral rectus? And then in the abducted eye, the superior rectus causes elevation? Or the entire movement (abduction+elevation) is by the superior rectus?
I am super confused. Superior and inferior oblique muscles are responsible for abduction movement; superior and inferior rectus muscles are involved in adduction, but why they will be involved in the opposite movement here? For example, 2:43 mins, should it be left inferior muscle and right superior muscle innervated?
So here we are talking about dextrodepression So right eye will be in abduction - best depressor will be inferior rectus (so right inferior rectus) Left eye is in adduction - best depressor is superior oblique (so left superior oblique) Abduction & adduction are tertiary actions of these muscles. What we are talking about here is the single most muscle which has the main action in a particular position
@@ophthalmologypearls Thankful for your source, I would spend some time to think about the motions of muscles in my head to really understand it, but in the meantime, I would just memorize it by rote for my assessment. Thanks for your videos about extraocular muscles and gaze position, I personally think you explain it easier and more in-depth with your stereoscopic model than my optometry teacher. Many thanks. ☺️
