A few years ago, UK-based Adlens developed self-adjustable glasses designed to let those in the developing world dial in their ideal magnification level – no optometrist required. Now the ...

Superfocus glasses are the world’s only eyeglasses offering on-demand, user-adjustable, continuously variable focus through the entire field of view. Superfocus are available from eye care ...

On the other end of the scale, there are ornamental magnifying glasses, designed for light use, but more often wind up as a curio to add to bookshelves and cupboards.