Rods & Cones - RIT Center for Imaging Science . The bottom figure shows the distribution of rods and cones in the retina. This data was prepared from histological sections made on human eyes. In the top figure, you can relate visual angle to the position on the retina in the eye. Notice that the fovea is rod-free and has a very high density of cones.
The Rods and Cones of the Human Eye . Rod and Cone Density on Retina. Cones are concentrated in the fovea centralis. Rods are absent there but dense elsewhere.. Measured density curves for the rods and cones on the retina show an enormous density of cones in the fovea centralis. To them is attributed both color vision and the highest visual acuity. RODS, CONES, AND THE FOVEA - Indiana University Bloomington . Rods, Cones, and the Fovea. Figure 4. is a diagram of horizontal cross section of! the right eye viewed from the top. The nose is towards the bottom of the figure. For another diagram of the eye with links to definitions, click HERE. The retina contains the receptors for vision: about 100 million rods and 6 million cones. Because it contains The Eye: Structure, Focusing, Rod and Cone Cells - ScienceAid . The best way to explain why human photoreceptors are shaped the way they are is by comparing human eyes to the eyes of other mammals. The rods in the human eye differentiate between light and dark while the cones differentiate color. The human eye has about 120 million rods to process light and dark and about 6 million to process color. PHY 3400 Image Gallery: Vision and the Eye . Image of rods and cones under a microscope. Detailed diagram of a rod. Electron micrograph showing the details of a rod outer segment. Diagram of retinal structure. Another picture showing ! the structure of the retina and its seven layers. Still anothe! r diagram showing the structure of the retina, from Compton's Encyclopedia.
