What does -1.75 sight means? Does it equal to 6/18?
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What does -1.75 sight means? Does it equal to 6/18?
It means that you have 1.75 diopters of correction. That's not a full prescription, obviously. Which eye is that? Both? Is there an astigmatism? Add power? What does your WHOLE prescription say? It would be easier for me to explain if I knew the whole thing.
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