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Human eyes appear red in some flash photographs as a result of the camera flash bouncing off the red blood vessels and red tissue in the retina. This happens when using a photographic flash up close a camera lens, in relatively low light (Richard, 14).The red-eye effect appears in the animal and human eyes that do not have tapetum lucidum. The red-eye effect is as a result of the color of the fundus, a pigment predominantly positioned in the retinal pigment epithelium. The fundus color is a result of melanin pigment.