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Different kinds of light sensitive organs are found in a variety of organisms. The simplest eyes do nothing but detect whether the surroundings are light or dark, while more complex eyes can distinguish shapes and colors. The visual fields of some such complex eyes largely overlap, to allow better depth perception, as in humans; and others are placed so as to minimize the overlap, such as in rabbits and chameleons.
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[8] The gap between tissue layers naturally formed a bioconvex shape, an ideal structure for a normal refractive index. They can distinguish, READ ON...
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For example, birds of prey have much greater visual acuity than humans, and some can see ultraviolet light. Furthermore, color is distinguishable when breaking down the iodopsin of cone cells because there are three forms of this protein.When a creature with binocular vision looks at an object, the eyes must rotate around a vertical axis so that the projection of the image is in the centre of the retina in both eyes.[6] This gradually changed as the eyespot depressed
The movements of the eye are no exception, but they have special advantages not shared by skeletal muscles and joints, and so are considerably different. All of the individual components through which light travels within the eye before reaching the retina are transparent, minimising dimming of the light. Other animals have other ranges, with many such as birds including a significant ultraviolet (shorter than 400 nm) response.In most vertebrates and some molluscs,
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