So once the photons of life hit the rods and cones, this causes conformational change. So the change in our shape of the proteins found on the membranes of our cells, which leads to the production of an electrical signal that shovels up to the brain via our optic nerve. So there are two types of cells that we have to be familiar with when we're talking about this transmission of electrical signals. So once the light actually hits the rods and cones, that light is transformed into electrical signals that basically ends up on a cell known as a bipolar cell. And the bipolar cell then passes down that signal to our retinal ganglion cells. And those retinal ganglion cells, their exxons basically converge and meet and they form our optic nerve, which basically goes all the way up to the brain.