The human eye is a specialized type of structure that is capable accepting outside stimuli in the form of photons of light. So basically, our human eye takes the energy that is stored in the photons of light and it transforms that energy into electrical signals which eventually end up in the human brain. And the human brain uses those electrical signals to to create an image of our surroundings. So let's begin by looking at the diagram of our eye. So if we examine the eye from a side view and we take a cross section, we get the following diagram. So let's go through each one of these individual structures of the eye and discuss what their function is.