Ucla Health Eye Care, L A, Ca

For example, leaping spiders have a large pair of straightforward eyes with a slim subject of view, supported by an array of other, smaller eyes for peripheral vision. Some of the only eyes, called ocelli, could be found in animals like some of the snails, which cannot truly “see” in the regular sense. They do have photosensitive cells, however no lens and no other means of projecting an image onto these cells. They can distinguish between light and dark, however no more.