Neurological Diagnosis: Cranial Nerves

Question 1

Evaluate Cranial Nerve I

Answer 1

Olfactory Nerve

1. Do you have any change or loss in smell or taste?
2. Use penlight to check nostrils for occlusions
3. Evaluate sense of smell
   
   1. Do you smell anything?
   2. Can you identify the substance?

Question 2

Test Visual Acuity

Answer 2

Optic Nerve Cranial Nerve II

1. Reading print
2. Can you identify the color?
3. Can you identify the shape?

Question 3

Confrontation Test

Answer 3

Optic Nerve Cranial Nerve II

Cover 1 eye

8 directions

Shaking or still?

Question 4

Extraocular Movements

Answer 4

1. Trochlear Nerve:
   
   1. Superior Oblique: Down and in
2. Abducens Nerve:
   
   1. Lateral Rectus: Lateral
3. Oculomotor Nerve:
   
   1. Inferior Oblique: Up and out
   2. Medial Rectus: Medial
   3. Superior Rectus: Up
   4. Inferior Rectus: Down

Question 5

Cardinal Fields of Gaze

Answer 5

1. Trochlear Nerve
   
   1. Superior Oblique: Down and in
2. Abducens Nerve
   
   1. Lateral Rectus: Lateral
3. Oculomotor Nerve
   
   1. Inferior Oblique: Up and out
   2. Medial Rectus: Medial
   3. Superior Rectus: Superior
   4. Inferior Rectus: Inferior