Home / Glossary Photoreceptor - definition name for cell in the retina that is sensitive to light, and can convert light signals into information used by the brain to create a visual representation. Photoreceptors include rods and cones. Read more: 2-Minute Neuroscience: Retina Know Your Brain: Retina View fullsize Cell layers of the retina. Photoreceptors are circled in red.
