NEURO-OPHTHALMOLOGY

INDEX

CN 4

References

Mulitple Choice Self Test

Q1: This patient has double vision. the head is tilted either to left or right AND the head is turned either to left or right. Which one of the following is correct?.
    a: Tilt to right and head turn to left .
    b: Tilt to left and head turn to right .
    c: Tilt to right and head turn to right .
    d: Tilt to left and head turn to left .
Q2: Which of the following cranial nerve deficits are present?.
    a: Right 3/ Left 6 .
    b: Right 3/ Left INO.
    c: Right 4/ Left 6 .
    d: Right 6 /Left 4 .
Q3: When examining 4th nerve function in the presence of a third nerve palsy, what should you do?.
    a: Ask the patient to look down in adduction .
    b: Examine for intorsion of the abducted eye .
    c: Look for elevation of the adducted eye .
    d: Look for head tilt .
Q4: Regarding the previous patient, here is their MRI scan: which nerve is likely to be damaged by the lesion?.
    a: 5th.
    b: 6th.
    c: 4th.
    d: 3rd.
Q5: Which nerve is likely to be damaged by the abnormality shown?.
    a: 3rd.
    b: 4th.
    c: 5th.
    d: 6th.
Q6: What deficit is present in this patient?.
    a: Skew deviation.
    b: Right 4th nerve palsy.
    c: Wallenberg Syndrome.
    d: Left 4th nerve palsy.
Q7: Which of the following is not correct with respect to distinguishing between a 4th nerve palsy and a head tilt due to an OTR?.
    a: 4th nerve palsy is typically comitant .
    b: In 4th nerve palsy hypertropia worsens in ADDuction of the hypertropic eye .
    c: Hypertopia will improve in the supine position in head tilt due to an OTR .
    d: Both have a head tilt in the direction of the lower eye .
Q8: Regarding Question #6, if the patient has an associated INO, on what side is the lesion?.
    a: Left pons .
    b: Right pons .
    c: Left midbrain.
    d: Right midbrain .