Saw someone wearing TWO-lenses glasses, about 1 inch apart, parallel

Discussion in 'Optometry Archives' started by David Combs, Nov 19, 2009.

  1. David Combs

    David Combs Guest

    Was going to a music performance; elderly woman behind me
    had on glasses of a type I'd never seen before.

    It was if she had two pair of glasses, one about one inch
    out in front of the other pair.

    I got a close look at them, and it wasn't some glued-up
    hack job -- they were clearly manufactured from scratch
    to be like that.

    A: What is the generic name for that type of glasses?

    B: What is it, acting as a telescope? (But as far
    as I could tell it didn't invert the image.)

    C: how long have these thing been around?

    D: No -- stupidly, I didn't study the individual
    near and far lens, to see if they were both
    convex or concave or one of each.


    David Combs, Nov 19, 2009
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