Concept
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Anatomy of the Eye
Rods and cones
Rods and cones are photoreceptors in the retina. Rods respond in low light and can detect only shades of gray. Cones respond in intense light and are responsible for color vision.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, Vision. October 17, 2013."
http://cnx.org/content/m44761/latest/Figure_36_05_03.jpg
OpenStax CNX
CC BY 3.0.