CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
Vision. Macrophotograph of a human eye, showing a rainbow of light striking the pupil in a depiction of vision. The grey-blue iris surrounds the dark pupil. Light entering the pupil is detected by cells of the retina at the back of the eye, and a visual image is recorded in the brain. Vision is the dominant sense with which humans gather information on their local environment.
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