Your article states that farsightedness will be treated with these new electric lenses. With some tweaking, could nearsightedness and astigmatism be treated as well? Could binoculars, telescopes, and microscopes use this technology?

Roger Curnow
Grand Rapids, Mich.

Yes and yes, says Dwight P. Duston of PixelOptics in Roanoke, Va. However, he notes that it’s instant switching between focus settings that distinguishes the new, liquid crystal lenses from standard lenses, not better vision correction .—P. Weiss

From the Nature Index

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