Is full contraction of the levator palpebrae possible when looking straight down? (I own congenital ptosis)?
I have eyelid ptosis and am looking for ways to increase the strength of my levator muscle. I just assume that isolating the levator from any innervating muscles would be of great benefit, but just speculating in that.
Thank you very much. I know this is a difficult interview. I'm hoping I'll come across an anatomical expert.
Answer:
Theoretically, I don't think it is possible to look down and elicit your levator palpebrae. Looking down or closing your eyes inhibits the levator palpebrae (LP). The orbicularis oculi (OO) muscles are the LP's primary antagonist. The OO closes your eyelids and the LP opens them. Isometric exercises of your OO and LP would not produce the perceptible movements surrounded by the eyelids like when you do an isometric next to your biceps and triceps.
During voluntary actions, voice flexing your elbows, the brain coordinates 2 functions within the elbow muscles. It activate the elbow flexors and inhibits the elbow extensors in charge to create a productive elbow flexion. This is what is lost during a stroke. The inhibitory function of the brain is lost so that a desire to just say-so point your finger causes contraction of adjectives the upper extremity muscle resulting in spasticity. It is possible, however, to do an isometric contraction where on earth you can tense adjectives the muscles at the same time, but after at this state, there is no perceptible span of motion.
I "THINK" congenital ptosis can be attributed to the laxity of the LP's ligamentous attachment to the eyelids, that despite important contraction of your LPs, the tension produced is lost, otherwise set as passive insufficiency. It's similar to trying to pull a trailer 10 foot up the hill next to only 10 foot of free space in front of your saloon and 10 feet of rope to verbs the trailer. No matter how strong you put your sports car in gear, the trailer will not move unless you shorten the distance between the trailer and the coup¨¦ OR add more space within front of the car.
I own a friend who had a reconstructive surgery to cut the ptosis. I do think that a consult to an ophthalmologist is your best preference. I am no ocular expert but I hope my kinesio-analysis can refine you.
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