The center of the human retina, called the "fovea centralis", or just "fovea", has the most rod cells and cone cells for receiving light. Even though the fovea takes up only 1.5 square millimeters, it plays the most important roles in vision. It is only around 1% of the human retina, but the fovea sends about as much information to the visual cortex as the rest of the retina combined. 