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What is the normal eye power? Mine is -1.75,is it the normal category?
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The normal eye power is 6/6 A plus sign in front of the number means you are farsighted and a minus sign means you are nearsighted. These numbers represent diopters, the unit used to measure the correction, or focusing power, of the lens your eye requires. ... The C refers to the "cylinder" or astigmatism, and can be a negative or a positive number
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