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These lenses are called single vision due to possessing one power throughout the glasses. Such eyeglasses provide remarkable solution to the one vision disorder. People find such single vision lenses easier to use when compared to bifocals and progressive glasses.

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Analyzing the vision depends upon the speed of light and the equation on which the rays bend on the retina. Theoretically, when the light traveling from the object passes through the retina, we get our vision.