medial rectus การใช้

• However no direct vestibular neuron to medial rectus motoneuron pathway exists.
• A fracture here could cause entrapment of the medial rectus muscle.
• Bilateral medial rectus resection is the preferred type of surgery.
• This is due to damage to both the motoneurons and interneurons projecting through the medial longitudinal fasciculus to the contralateral medial rectus neurons.
• Firstly, it helps to prevent the contracture of the medial rectus which might result from its acting unopposed for a long period.
• The oculomotor neurons functions to send its axons in the oculomotor nerve, to control the medial rectus, and converge the two eyes.
• Another pathway ( not in picture ) directly projects from the vestibular nucleus through the ascending tract of Dieters to the ipsilateral medial rectus motoneuron.
• In such cases recession of the medial rectus of the affected eye is accompanied by recession and / or fadenisation of the contraleral medial rectus.
• In such cases recession of the medial rectus of the affected eye is accompanied by recession and / or fadenisation of the contraleral medial rectus.
• The medial rectus is the second-most-commonly-affected muscle, but multiple muscles may be affected, in an asymmetric fashion.
• Studies have provided indications that performing injections into both medial rectus muscles may be more effective than an injection into one medial rectus muscle alone.
• Studies have provided indications that performing injections into both medial rectus muscles may be more effective than an injection into one medial rectus muscle alone.
• This results in the failure of the medial rectus muscle to contract appropriately, so that the eyes do not move equally ( called disconjugate gaze ).
• Other management options at this initial stage include the use of botulinum toxin, which is injected into the ipsilateral medial rectus ( botulinum toxin therapy of strabismus ).
• When looking outward or laterally, the lateral rectus of one eye must contract via increased innervation, while its antagonist, the medial rectus of the same eye-shall relax.
• The " superior oblique " muscle originates at the back of the orbit ( a little closer to the medial rectus, though medial to it, getting rounder as it
• Extraocular muscles other than the medial rectus and lateral rectus have more than one action due to the angle they make with the optical axis of the eye while inserting into the eyeball.
• In Graves ophthalmopathy, it is not uncommon to see an esotropia ( due to pathology of the medial rectus muscle ) co-morbid with a hypotropia ( due to pathology of the inferior rectus muscle ).
• Due to the accommodation to focus on a near object, an increase in the signal sent by cranial nerve III to the medial rectus muscles results, drawing the eyes inward; this is called the accommodation reflex.
• In normal vision, lateral movement of one eye ( lateral rectus muscle ) is precisely coupled to medial movement of the other eye ( medial rectus muscle ), so that both eyes remain fixed on the same object.