7/26/2023 0 Comments Retina location and function![]() There are approximately 120 million rods found in the human retina.Ĭones are not as sensitive to light as rods are. Their core purpose is to allow for vision in dim settings. They only have one kind of light sensitive pigment so they are not very good for color vision. The rods are sensitive to shape and movement and changes between light and dark. These two photoreceptors perform different tasks when it comes to dealing with incoming light. The retina is made up of highly specialized cells that can respond to light. What Do the Rods and Cones in the Retina Do? Its connection to the brain is mediated via the optic nerve. The retina is the reason we can see in different conditions and in such a dynamic way. ![]() Without this transformation, the light that is focused on the eyes would be useless for navigating and manipulating our environments. So what exactly do we mean when we say that the retina transforms light into meaningful scenes? Well, simply put, the retina converts light to nerve signals. ![]() The rest of the eye works diligently to focus the light rays that eventually make it to the retina. Not only is it translating light into meaning, it is acting as editor and curating, sifting out information and only processing what is useful for the viewer. The job of focusing incoming light is occupied by the retina, which works closely with the brain, to allow us to see the faces of our loved one, beautiful vistas, and the pages of a good book. It is self-focusing, self-adjusting, and self-cleaning. The eye is a marvelous organ that takes light and, in partnership with the nervous system, transforms it into a meaningful scene. Understanding How the Retina Allows Us To See
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