0826 Eye movement disorders Flashcards
Version = movement of both eyes together. Esoversion refers to?
Divergent eye movement.
Version = movement of both eyes together. Exoversion refers to?
Convergent eye movement.
Version = movement of both eyes together. Hyperversion refers to?
Vertical misalignment in eye movement.
What is strabismus?
a misalignment or deviation of the visual axis.
What is tropia?
relative deviation of the visual axes with both eyes viewing.
What is phoria?
a relative deviation of visual axes with one eye covered.
What is congenital strabismus?
a misalignment or deviation of the visual axis that may be concomitant, intermittent, or latent.
From an abducted position, which extra-ocular muscle elevates the eye?
superior rectus muscle.
From an abducted position, which extra-ocular muscle depresses the eye?
inferior rectus muscle.
From an adducted position, which extra-ocular muscle elevates the eye?
inferior oblique muscle.
From an adducted position, which extra-ocular muscle depresses the eye?
superior oblique muscle.
The superior division of CN III innervates which extra-ocular muscles?
superior rectus and levator palpebrae superioris muscles.
The inferior division of CN III innervates which extra-ocular muscles?
inferior rectus, inferior oblique, medial rectus, pupillary muscles.
What test is done to detect a CN IV palsy?
Bielschowsky head tilt test. The eye elevates with the head tilt to that side with the CNIV palsy (as a way to compensate for the loss of the superior oblique the patient may naturally have a head tilt to the opposite side)
