Visual field defects Lec 18

Question 1

Scotoma

Answer 1

Portion of VF missing

Question 2

Arcuate

Answer 2

Arc-like shape defect produced by retinal nerve fiber bundle damage

Question 3

Altitudinal

Answer 3

Superior or inferior defect that respects horizontal meridian
Splits horizontally

Question 4

Hemianopia

Answer 4

Nasal or temporal defect that respects the vertical meridian

Splits vertically

Question 5

Quadrantanopia

Answer 5

Affects one quarter

Question 6

Homonymous

Answer 6

Defect is on the same side

Question 7

congruous

Answer 7

Defect similar in both eyes

Question 8

Incongruous

Answer 8

Defect different in both eyes

Think optic tract defect

Question 9

Retina defects

Answer 9

General or focal field defects

• central scotoma from foveal lesion
• Arcuate defect in glaucoma

Question 10

Optic nerve defects

Answer 10

Decrease VA and color vision

Question 11

Optic chiasm defect

Answer 11

Tumors

Carotid aneurysms

Question 12

Optic tract defect

Answer 12

Defects are homonymous

incongruous

Question 13

Anterior lesion

Answer 13

Meyer’s loop
Pie in the sky
-slightly incongruous

Question 14

Posterior lesion

Answer 14

right homonymous incomplete superior quadrantanopia

Question 15

Calcarine cortex

Answer 15

Macular sparring