Visual system Flashcards
1
Q
Where are the two blind spots
A
macula lutea
optic disc
2
Q
Where is the best image seen
A
fovea centralis - macula
3
Q
What is the pathway of pupillary light reflex
A
optic nerve–> pretectal–>dinger westphal nucleus –> ciliary ganglion–> sphincter pupillae muscle
4
Q
Which of the retinal fibers decussate at the optic chasm?
A
nasal retinal fibers
5
Q
Areas after the optic chaism will present with what type of lesion ?
A
Contralateral
6
Q
Any optic track or structure starting with the letter L will present with ?
A
Superior visual field deficits
7
Q
Why is there macular sparing ?
A
Due to dual supply to the cortex ( MCA is still intact)
