Visual field defects

Question 1

Damage to optic nerve

Answer 1

Anopia (loss of entire sight from eye)

Question 2

Damage to optic chiasm (e.g. pituitary lesion)

Answer 2

Bitemporal hemianopia (loss of bilateral temporal sight)

Question 3

Damage to optic tract

Answer 3

Homonymous hemianopia (hemianopic visual loss on the same side of both eyes)

Question 4

Damage to Meyer loop (temporal lobe, MCA infarct)

Answer 4

Upper quadrantic anopia (on the same upper quadrant of both eyes)

Question 5

Damage to dorsal optic radiation (parietal lobe, MCA infarct)

Answer 5

Lower quadrantic anopia (on the same lower quadrant of both eyes)

Question 6

PCA infarct

Answer 6

Homonymous hemianopia with macula sparing (macula has bilateral projection to the occiput)

Question 7

Macular degeneration

Answer 7

Central scotoma (loss of central vision)