Question

which of the following pathological conditions is the loss of half the visual field, often due to a stroke?
a nystagmus
b photophobia
c hemianopia
d strabismus

Explanation:

• Nystagmus: Involves involuntary eye movements, not loss of half visual field.
• Photophobia: Is extreme sensitivity to light, not related to half - visual - field loss.
• Hemianopia: Specifically refers to loss of half the visual field, often due to stroke (affecting visual pathways in brain).
• Strabismus: Is misalignment of eyes, not half - visual - field loss.

Answer:

C. hemianopia