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Diagram of Human Eye. Overhead diagram of the right eye. By Sathiyamoorthy , modified by ZStardust at Wikimedia Commons. Retina Photo.
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Diagram of Human Eye Overhead diagram of the right eye. By Sathiyamoorthy, modified by ZStardust at Wikimedia Commons.
Retina Photo Photograph of a human retina. The dark spot in the center of the image is the fovea. The optic nerve connects in the bright area on the right, where the blood vessels converge. Image made available by Alexander Churkin via Wikimedia Commons under the GNU Free Documentation License.
Pinhole Camera Diagram of a pinhole camera, showing how the inverted image is formed on the screen. A light ray from the bottom of the tree travels through the pinhole to the top of the viewing screen, while a light ray from the top of the tree travels through the pinhole to the bottom of the screen. The arrangement of the human eye is similar.
Retina Schematic Schematic of layers in the retina. The back of the retina is at the top of the diagram. Adapted from work made available by Peter Hartmann and Marc Gabriel Schmid at Wikimedia Commons under the CC By-SA 3.0 license.