Describe why the fovea is the area of greatest acuity in the retina. In your answer, make sure to include information about the type of cells that are present there and issues of convergence. The fovea has the highest concentration of cones and the lowest concentration of rods. In the fovea the cones are smaller in diameter which allows them to be more densely packed than in the periphery.
Cones provide better acuity than rods because they have lower convergence on the bipolar cells.
Direct passage of light means less dispersion of light and greater likelihood that the receptors will pick up all the photons of light that are available. Name the type of cells that carry color information at each stage of the visual system - from the retina to the primary visual cortex. This wavelength is sensed by short-wavelength cones that are maximally responsive to light at the wavelength of 430 nm. Describe the path of input of visual information coming in from the nasal portion of the left visual field . The axons from the magnocellular cells in layer 1 of the LGN will synapse on cells in layer 4Ca of the primary visual cortex.