| Front | Cones |
|---|---|
| Back | Packed together in fovea Cones give information in trichromatic version (3 different optical pigments: red-sensitive, green-sensitive and blue sensitive) Cones less sensitive than rods (only fire action potential in bright light) one cone joins one neurone, so it takes more light to reach the threshold and trigger and action potential Cones give high acuity because cones are close together and one cone joins one neurone, when light from 2 points hits 2 cones, two action potentials go to the brain so you can distinguish two points that are close together as two separate points |
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