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Sphere refers to the power of your lens (measured in dioptre units) to correct the degree of short or long sight you have. It is common for the number to be different for each eye. The figures will have a plus sign if you are longsighted and a minus sign if you are short-sighted.
Sphere refers to the power of your lens (measured in dioptre units) to correct the degree of short or long sight you have. It is common for the number to be different for each eye. The figures will have a plus sign if you are longsighted and a minus sign if you are short-sighted.
We recommend you seek professional advice if you are concerned about your eye health
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