Photoreceptors, Receptive Fields, and Lateral Inhibition

In this video I go into more detail on the retina, describing the two main types of photoreceptors (rods and cones) and how they operate in different levels of light. Next I describe the composition of receptive fields and how retinal ganglion cells communicate differing patterns of light on the receptive fields. Finally I explain lateral inhibition and how it … Read More

Parts of the Eye: How Vision Works

In this video I describe the parts of the eye and the function of each of these parts for vision. I also explain why the red-eye effect occurs in photographs and how an additional light is able to correct for this problem. I also describe how changes in the flexibility of the lens lead to common visual problems in aging, … Read More