Eye Function - Detecting Colour
Biology: Cambridge International GCSE Supplement, topic 14.2.5
Detecting Colour
There are two types of receptor cells in the retina:
Rod cells
- Detect visual information without colour.
- Essential in low light conditions (night vision).
- Not present in fovea.
- High density across all of retina.
Cone cells
- Detect colour.
- Three different types for detecting wavelengths of light in greens, reds and blues.
- Present in low density across all of the retina.
- Densely packed in the fovea.
Test yourself on Eye Function - Detecting Colour
Name the two types of receptor cells found in the retina
Which of the following is true for rod cells?