#6 Flashcards
TRUE/FALSE
Lesions in the brainstem or in the supranuclear pathways produce conjugate deviations which affects only one eye
False (affects both eyes)
TRUE/FALSE
The most common cause is a small haemorrhagic or thrombotic lesion in the midbrain associated with atherosclerosis
False (Arteriosclerosis dapat)
***di ko sure which is
which sa duha ang naa sa question but arteriosclerosis is
ang correct para ma TRUE ang statement
TRUE/FALSE
In raised intracranial pressure, the nerve most frequently involved is the fourth
False (sixth nerve)
TRUE/FALSE
The position of the eyes with the normal eye fixing is called the primary deviation
True
TRUE/FALSE
This deviation of the sound eye when the paralyzed eye fixates the target eye is called the secondary deviation
True
TRUE/FALSE
If both eyes are functional and one deviates, monocular
diplopia results
False(binocular)
TRUE/FALSE
In paralysis of the right lateral rectus, the px keeps his face turned to the right
True
TRUE/FALSE
True torticollis is a term sometimes applied to tilting of the head to compensate for defective vertical movements of one eye
False (Ocular Torticollis)
TRUE/FALSE
In maddox, vertical palsies the paresis is due to failure of the ‘same named’ rectus muscle or the ‘most crossed named’ oblique muscle
False (rectus muscle)
TRUE/FALSE
In maddox, horizontal palsies, the failure is due to same named muscle for the right eye on looking to the right and same named muscle for the left eye on looking to the left
True
TRUE/FALSE
Affection of several muscles simultaneously is usually due to paralysis of the CN II (optic nerve)
False (CN III/Oculomotor nerve)
TRUE/FALSE
If only the extrinsic muscles are affected the condition is called internal ophthalmoplegia
False (external ophthalmoplegia)
TRUE/FALSE
In CN IV palsy, there is an esotropia or convergent with limitation of movement outwards
False (CN VI palsy)
TRU/FALSE
In CN VI palsy, there is esotropia or convergent squint with limitation of movement outwards and the face is turned towards the paralysed side
False (CN IV palsy)
TRUE/FALSE
A congenital right superior oblique palsy produces a compensatory head tilt to the right with chin depression and slight face turn to the right
False (left superior oblique palsy)
TRUE/FALSE
In Brown Syndrome, there is a marked defect of elevation in the adducted position somewhat resembling the effects of paresis of the inferior oblique muscle
True
TRUE/FALSE
Alignment of the eyes should be undertaken before the end of the second year of life if the aim is to obtain some degree of binocular vision
True
TRUE/FALSE
Forced duction test or ability to move the eye mechanically using a forceps to hold the anaesthetized eye at the limbus
True
TRUE/FALSE
- Active force generation text or estimation of the amount of force generated by the affected muscle by using a forceps to hold the anaesthetized eye at the limbus and assess the ‘tug’ induced by the contracting muscle
- In the presence of third nerve paralysis, function of the fourth nerve is assessed by instructing the Px to attempt looking straight downwards
-True
-True
Compensatory…
- Left hyper, Right turn, Left tilt
- Left hyper, Left turn, Right tilt
- Right hyper, Left turn, Right tilt
- Right hyper, Right turn, Left tilt
- Left hyper, Left turn, Left tilt
- LSO
- LIR
- RSO
- RIR
- RIO
What muscle ang naay palsy…
- PM-OD, Left head tilt
- PM-OS, Right head tilt
- PM-OS, Left head tilt
- PM-OD, Chin Elevation
- PM-OS, Chin Depression
- RSO
- LSO
- LIO
- RSR
- LIR
There is a slow light reflex and better constriction of the pupil with the near synkinesis
Pseudo-Argyll Robertson Pupil
The upper lid retracts as the eye is adducted and falls as the eye is abducted
Horizontal Gaze Lid Dyskinesis
As the eye attempts to move downwards, the upper lid retracts, because some of the fibers originally supplying the IR muscle are now misdirected to supply the LPS
Pesudo-von Graefe Lid Sign
