optic nerve Flashcards
what are the different types of vision we can test through the optic nerve
- direct response
- swing light test
- peripheral
- visual fields
- light perception
- rapd
- colour vision
- motion detection
what does the optic nerve leave through
scleral opening
do people who are long sighted have a smaller or larger optic nerve and eyebal
smaller optic nerves and eyeball
if the nerve is swollen can you see the cup?
no
when do the optic nerve ganglions become myelinated
at the scleral opening
normal or abnormal?
normal
what is this
glaucoma
-expansion of the cup
whats wrong with this
-nerve cut off, its not symmetrical
typical of glaucoma
what is this
swollen disc
what is this
disc drusen
- deposits of calcium around optic nerve
- not a complete circle
what is abnormal about this
pale disc
what is this
myelinated nerve fibres
what does incongruous mean
different parts of field in each eye
what does hemianopic mean
half the field is affected
where is the lesion
right optic nerve
where is the lesion
right occipital cortex
where is the lesion
left optic radiation
where is the lesion
optic chiasm
