Optical Anatomy......?

Question

Of the two cells that make up your retina, the rods and the cones (both named for their shape), which senses colour?

Answer 1

The retina contains two types of photoreceptors, rods and cones. The rods are more numerous, some 120 million, and are more sensitive than the cones. However, they are not sensitive to color. The 6 to 7 million cones provide the eye's color sensitivity and they are much more concentrated in the central yellow spot known as the macula. In the center of that region is the " fovea centralis ", a 0.3 mm diameter rod-free area with very thin, densely packed cones.

Answer 2

Cones are more condensed in your macula which enables you to see sharp central vision for fine detailed task, such as reading.. Rods are more concentrated in the periphery and responsible for scoptic vision

Answer 3

To add to Footpritnz123's correct answer, the ability to descriminate colour is not inherent in the cone cell, but is because the human eye has three different types of cone cell each with a different peak wavelength sensitivity.

People with a colour vision problem normally have an anomaly in , or are missing *one* of the three types, restricting the *range *of colours that can be identified.

It is very rare to have only one type of cone, or no cones at all,

and have pure "black and white" vision.