A variety of cells in the retina work closely to turn light into nerve signals sent from the eye to the brain. The retina is a complex tissue subdivided into distinct layers of different cell types. Muller glial cells, retinal pigment epithelial (RPE) cells, and blood vessels (all shown in blue) support photoreceptor cells (green) as they turn light into nerve signals. These cells are closely associated in the photoreceptor layer with Muller glia at the bottom and RPE and blood vessels at the top. Cell nuclei are shown in red.
Credit: National Eye Institute, National Institutes of Health (NEI/NIH)