SGL 5: Graf

Question 1

• A complete coronal transection of the optic chiasm will result in:
• The left visual hemifield is represented
• The optic nerve is composed of axons arising from which of the following elements of the retina?
• A 43-year-old woman presents with the complaint of difficulty seeing. The history reveals that this patient is overweight, has high blood pressure that is poorly controlled, and an A1C that has varied between 9.7 and 12.3 over the last 2 years. An ophthalmological examination reveals a visual loss, and MRI shows a lesion in the area indicated on the image below. Which of the following would most likely describe the symptoms experienced by this woman?
• Which of the following is indicated by the arrows in the image below?

A 68-year-old woman complains to her daughter of a sudden headache accompanied by a change in her vision. A visit to her physician confirms a partial visual loss, and MRI reveals a vascular occlusion in the right hemisphere in the area outlined in the image below. This woman is most likely experiencing which of the following deficits?

A 79-year-old woman complains to her physician that she is having trouble seeing; she has no history of visual problems. The visual field examination reveals a right superior quadrantic anopsia, and the ophthalmoscopic examination shows no frank abnormalities of the optic disc or retinal vasculature. Which of the following represents the most likely location of the lesion in this woman?

A 29-year-old woman visits her family physician with the complaints of diminished vision. The history and examination reveal that the woman also has persistent headaches that are not controlled by OTC medications, strikingly irregular menstrual periods, and her eating habits have recently changed. MRI shows a dumbbell-shaped pituitary tumor impinging on the areas indicated in the given image. Which of the following visual field deficits would most likely correlate with the location of this woman’s lesion (lesion and visual deficits are shown in orange; OS: left eye, OD: right eye)?

A unilateral lesion of the primary visual cortex (V1) following an ischemic stroke and involving both banks of the calcarine sulcus will most likely cause:

Answer 1

• complete blindness
• right lateral geniculate nucleus
• ganglion cells
• ischemic stroke is always foveal sparing
• left homonymous hemianopsia
• calcarine sulcus
• left inferior quadrantic anopia
• Left Meyer’s loop
• binasal hemianopia
• a contralateral homonymous hemianopsia