11-28-2007, 09:27 AM
A 37-year-old woman is brought to the emergency department because
she has been unable to see out of her right eye since awakening 2
hours ago. She states that any movement of the eye is painful.
Examination shows visual acuity of 20/200 in the right eye and 20/20
in the left eye. The optic fundi are normal. The left pupil reacts
normally to light. The right pupil is poorly reactive to direct light.
The remainder of the eye examination shows no abnormalities. Which of
the following is the most likely site of the lesion?
A
) Left optic nerve
B
) Left optic radiation
C
) Left optic tract
D
) Left visual cortex
E
) Optic chiasm
F
) Retina
G
) Right optic nerve
H
) Right optic radiation
I
) Right optic tract
J
) Right visual cortex
she has been unable to see out of her right eye since awakening 2
hours ago. She states that any movement of the eye is painful.
Examination shows visual acuity of 20/200 in the right eye and 20/20
in the left eye. The optic fundi are normal. The left pupil reacts
normally to light. The right pupil is poorly reactive to direct light.
The remainder of the eye examination shows no abnormalities. Which of
the following is the most likely site of the lesion?
A
) Left optic nerve
B
) Left optic radiation
C
) Left optic tract
D
) Left visual cortex
E
) Optic chiasm
F
) Retina
G
) Right optic nerve
H
) Right optic radiation
I
) Right optic tract
J
) Right visual cortex