Archives for May 2017

Neuro-ophthalmology Question of the Week: Visual Aura of Migraine

Question: What 3  historical factors can help establish that a transient loss of vision reported to be unilateral by the patient is consistent with the visual aura of migraine?


Neuro-ophthalmology Question of the Week: Diagnosis of Transient Monocular Vision Loss

Questions: Transient monocular vision loss with:
1. Headache, scalp tenderness, jaw claudication, and diplopia suggest?
2. Eye or brow pain suggests?
3. Neck pain suggests?
4. Ipsilateral Horner syndrome suggests?
5. Simultaneous contralateral hemisensory or motor findings suggests?
6. Presyncope suggests?
7. When moving the eye suggests?
8. Blurry vision when reading suggests?

Neuro-ophthalmology Question of the Week – Vision Loss

Question: Which of the following are correct?
1. If visual acuity can be improved by the patient looking through a pinhole, the problem is refractive or ocular, not neurologic in origin.
2. Reduction in the saturation or brightness of colors may be an early sign of optic nerve disease.
3. A relative afferent pupillary defect ipsilateral to visual loss indicates an optic neuropathy or severe retinal disease (in which case the retina looks abnormal on funduscopic examination).
4. If nonorganic visual loss is suspected, normal stereovision indicates 20/20 visual acuity in both eyes.
5. A positive response to the optokinetic nystagmus stimulus indicates a visual acuity of at least 20/400 in the eye tested.

Neuro-ophthalmology Question of the Week: Magnetic Resonance Imaging

Question: Which of the following are correct?
1. Fat is hyperintense on T1.
2. Vitreous is hyperintense on T1.
3. CSF is hyperintense on T1.
4. Subacute blood is hyperintense on T1.
5. Fat is hypointense on T2.
6. Vitreous is hypointense on T2.
7. CSF is hypointense on T2.
8. Diffusion-weighted images are ideal in detecting acute cerebral ischemia.
9. T2 gradient echo allows better visualization of blood products, such as hemosiderin.

Neuro-ophthalmology Question of the Week: Computed Tomography

Question:  On CT which of the following are isodense, hypodense, hyperdense, or enhance on contrast?
1 Acute clot in a large vessel
2 Blood vessels
3 Bone
4 Breakdown of the normal blood-brain barrier
5 Calcium
6 Edema
7 Fat
8 Fresh blood
9 Infarction
10 Inflammatory lesions
11 Necrosis
12 Neoplasms
13 Normal brain