Land animals have eyes, which adapt to their natural surroundings and help protect themselves from predators, and also help them find food to eat. Every land animal has a different gift which their eyes can do, and the gifts they are given are different, depending on what they are and need to do.The eye is a light-sensitive organ of vision in animals. The eyes of various species vary from simple structures that are capable only of seeing the difference between light and dark to complex structures, such as those of humans and other mammals, that can distinguish minute variations of shape, color, brightness, and distance. The actual process of seeing is performed by the brain and not by the eye, the eye is just the camera and the brain is what makes the picture. The function of the
eye is to translate the electromagnetic vibrations of light it receives into patterns of nerve impulses that are transmitted to the brain. The brain then translates this into a picture of what we see.In general the eyes of all animals resemble simple cameras in that the lens of the eye forms an inverted image of objects in front of it on the sensitive retina, which corresponds to the film in a camera.Focusing the eye,is done by a flattening or thickening of the lens in the eye. This process is known as accommodation. In the normal eye, accommodation is not needed for seeing distant objects. The lens, when flattened by the suspensory ligament, brings distant objects to focus on the retina. For nearer objects the lens is increasingly rounded by ciliary muscle contraction, which rela
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