The eye curved cornea lens retina fovea optic disk Using
Light
Slide 2
photoreceptors transduce incoming light ganglion cells send
signals along to the brain The Retina has layers of cells
Slide 3
2 types of photoreceptors: rods and cones rods are very
sensitive - useful in dim light Two kinds of Photoreceptors
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Rods and cones are distributed differently across the retina
The Retina
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visual acuity (ability to see detail) depends on cones - thus
acuity varies across the visual field The Retina
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Why dont you notice your blind spot? The Retina
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Why dont you notice your blind spot? Blindspots dont overlap!
Your brain fills in the missing information The specific
information in the blindspot isnt much more missing than the rest
of the periphery! The Retina
Slide 8
three types of cones: short, medium, and long different
absorptions enable color vision The Retina
Slide 9
Ganglion cells project to the brain via the optic nerve
information is projected to contralateral cortex! Visual
Pathways
Slide 10
Seeing Depth Whats the big problem with seeing depth ?