superior oblique वाक्य
उदाहरण वाक्य
मोबाइल
- Superior oblique myokymia is an uncommon neurological condition caused by vascular compression of the trochlear nerve resulting in repeated, brief, involuntary episodes of movement of the eye.
- In these cases the main problem is that the inferior oblique muscle of the same eye acts unopposed by the weakened superior oblique muscle, pulling the eye up.
- People with superior oblique palsy on one side experience double vision, which is improved or even abolished by tilting the head towards the shoulder on the unaffected side.
- To compensate for the double-vision resulting from the weakness of the superior oblique, patients characteristically tilt their head down and to the side opposite the affected muscle.
- 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
- Brown syndrome is caused by a malfunction of the Superior oblique muscle, causing the eye to have difficulty moving up, particularly during adduction ( when eye turns towards the nose ).
- At Leipzig, with ophthalmologist Alfred Bielschowsky, he conducted studies on fusion and cyclodeviation in paresis of the superior oblique muscle as well as on congenital hyperfunction of the superior oblique muscle.
- At Leipzig, with ophthalmologist Alfred Bielschowsky, he conducted studies on fusion and cyclodeviation in paresis of the superior oblique muscle as well as on congenital hyperfunction of the superior oblique muscle.
- "' Congenital fourth nerve palsy "'is a condition present at birth characterized by a vertical misalignment of the eyes due to a weakness or paralysis of the superior oblique muscle.
- But This article shows the pair of muscles on each eye that are responsible for doing rotating our eyes that way ( they are the " Superior oblique " and " Inferior oblique " muscles ).
- The body of the superior oblique muscle is located " behind " the eyeball, but the tendon ( which is redirected by the trochlea ) approaches the eyeball from the " front ".
- This is because as the eye is abducted ( looks laterally ), the contribution made by superior oblique to depression of the eye decreases, as the inferior rectus muscle causes this movement more directly and powerfully.
- While at Leipzig he worked under physiologist Ewald Hering ( 1834-1918 ), and with Franz Bruno Hofmann ( 1869-1926 ), he conducted studies of fusion and cyclodeviation in superior oblique muscle paresis.
- The main muscle for abduction is the lateral rectus, so although superior oblique contributes to a downwards and lateral eye movement, testing this motion would not be specific enough as inferior and lateral recti muscles would also be tested.
- For example, the tendon of the superior oblique inserts " behind " the equator of the eyeball in the frontal plane, so contraction of the muscle also tends to " abduct " the eyeball ( turn it outward ).
- In order to understand the actions of the superior oblique muscle, it is useful to imagine the eyeball as a sphere that is constrained like the trackball of a computer mouse in such a way that only certain rotational movements are possible.
- To summarize, the actions of the superior oblique muscle are ( 1 ) " depression " of the eyeball, especially when the eye is adducted; and ( 2 ) " intorsion " of the eyeball, especially when the eye is abducted.
- The sixth nerve, the abducens nerve, which innervates the lateral rectus muscle of the eye ( moves the eye laterally ), is also commonly affected but fourth nerve, the trochlear nerve, ( innervates the superior oblique muscle, which moves the eye downward ) involvement is unusual.
- The superior oblique muscle ends in a tendon that passes through a fibrous loop, the "'trochlea "', located anteriorly on the medial aspect of the orbit . " Trochlea " means pulley in Latin; the fourth nerve is named after this structure.
- Trochleitis is diagnosed based on three criteria : 1 ) demonstration of inflammation of superior oblique tendon / trochlea region, 2 ) periorbital pain and tenderness to palpation in the area of the sore trochlea, and 3 ) worsening of pain on attempted vertical eye movement, particularly with adduction of the eye.
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