Recommendations for the Partially-Sighted (incl. lenses)
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These are the most powerful magnifiers AND the best optical quality for reading. But please do remember that size and magnification are linked: larger size = lower magnification; higher magnification = smaller size, there simply isn't any choice about this. It is best to start with the largest (weakest) magnifier because it covers the largest reading area, and then, if you really have to, upgrade to a more powerful, but smaller, magnifier.