16. Peripheral vision, methods for evaluation. Visual field testing Flashcards
1
Q
what is peripheral vision ?
A
ability to see objects or movements outside the direct line of vision
2
Q
what are the detectors for peripheral vision ?
A
the rods located largely outside the macula (centre)
3
Q
peripheral vision is weak in ?
A
distinguishing detail ,
colour and
shape
4
Q
why is the peripheral vision weak in distiguishing detail , colour and shape?
A
because the regeneration of the peripheral visio in the visual cortex is much smaller than that of the fovea
5
Q
what is the peripheral vision good at detecting ?
A
motion
6
Q
which cells detects motion in peripheral vision ?
A
magnocellular cells in the lateral geniculate nucleus
7
Q
what is the methds of evaluation of peripheral vision ?
A
visual field testing -target moved in flat plane
