Distribution of Rods and Cones
Cones:
- concentrated in center of eye (fovea centralis)
(+/- 1 degree on either side of the visual axis)
Rods:
- absent in the fovea
- maximum density 18-20 degrees from fovea
=> Visual acuity (spatial resolution) decreases with
increasing distance from fovea
-> trade-off between sensitivity, color/resolution