Do girlfriend Wear Glasses? Here"s Why!
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Have you ever before seen this "eye chart" before? that is smaller than the actual version the the chart that is supplied to test exactly how well you have the right to see. That was very first developed in 1863. If you have actually 20/20 vision, it means that in ~ a distance of 20 feet, you have the right to read a certain line (labeled 20) ~ above the chart and that her vision is normal. If you have the right to only check out the optimal line plainly (the one labeling 200), climate you have 20/200 vision. This method that you need to be 20 feet native the graph to check out what most people can check out at 200 feet. By the way, if someone"s vision is 20/200 or less in their much better eye through use the the finest eyeglass lens to correct your eyesight, climate they space legally blind.

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world wear glasses forseveral reasons. Human being who have "fuzzy" vision when they look at distantobjects are called nearsighted (myopic). In these people, the image isfocused in front of the retina. The lens ofglasses essential to correct vision in nearsighted people is concave. People who need glasses for reading and who have "fuzzy" vision forobjects close to them are dubbed farsighted (hyperopia). In farsightedpeople, objects are focused behind the retina. The lens the glasses neededto correct vision in farsighted people is convex. Astigmatism is anotherreason that you might have come wear glasses.

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Did friend know?
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Approximately 160 million human being in the united state wear glasses or contact lenses. (Source: Walker, T.C. And Miller, R.K., 2001 health Care company Market research study Handbook, fifth Edition, Norcross (GA): Richard K. Miller and also Associates, Inc., 2001.)

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They said it!
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"Spectacles.


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Ns don"t usage them. All i ask is a large, fair type, a strong daylight or gas-light, and one yard of focal distance distance, and my eyes are as an excellent as ever."--- Oliver Wendell Holmes, The Autocrat that the Breakfast Table, 1858

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