Lect 5 VF case studies

Question 1

T/F: it would be likely to have a color defect in association with a bitemporal hemanopia

Answer 1

True

Question 2

T/F: you would expect a negative APD along with an attitudinal visual field loss in both left and right eye

Answer 2

True

Question 3

Upon inspection of visual field, your patient has congruous homonymous hemianopia deficit on the left side. Where would you expect the lesion to be?

A) Right optic nerve
B) Left optic nerve
C) Right optic tract
D) Left optic tract
E) at the chiasm

Answer 3

C) Right optic tract

Question 4

Your patient visual field loss is diffused in the left eye and in the right eye there is a superior temporal defect. Where would you expect the lesion to be?

A) Right optic nerve
B) Left optic nerve
C) Anterior left chiasmal
D) Anterior right chiasmal
E) Posterior chiasm

Answer 4

C) Anterior left chiasmal

Question 5

Would an anterior left chiasmal lesion present with a positive APD?

Answer 5

Yes

Question 6

Patient present with a pie in the sky visual field deficit. Would you expect a negative or positive APD?

Answer 6

Negative

Question 7

A 67 year old white female with HTN was recently diagnosed with a seizure disorder, what kind of visual field deficit, if any, could you expect?

A) Pie in the sky
B) Pie on the floor
C) Homonymous hemianopia
D) Homonymous hemianopia with macular sparing

Answer 7

A) Pie in the sky (temporal lobe lesion could also cause a late onset seizure disorder)

Question 8

A 67 year old white female with HTN and DM presents with decreased sensation in left arm and leg, what kind of visual field deficit, if any, could you expect?

A) Pie in the sky
B) Pie on the floor
C) Homonymous hemonopia
D) Homonymous hemanopia with macular sparing

Answer 8

B) Pie on the floor (parietal lobe lesion can cause decreased sensation on the contralateral side)

Question 9

A 67 year old hispanic female with HTN complains about bumping into things, what kind of visual field deficit, if any, could you expect?

A) Pie in the sky
B) Pie on the floor
C) Homonymous hemonopia
D) Homonymous hemanopia with macular sparing

Answer 9

D) Homonymous hemianopia with macular sparing (remember, trauma is not macular sparing but a vascular insult is)