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Common SMD size

Discussion in 'Electronic Basics' started by Michael, Jan 31, 2006.

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  1. Guest

    What you describe--your two eyes having different focal lengths--is
    termed 'anisometropia.'

    Presbyopia--the loss of the ability to change your eyes' focal
    to "accommodate" objects at different distances (accomplished in youth
    by contracting the ciliary muscles, altering the shape of your eye's
    internal lens)--comes with age, afflicting all who live long enough.
    why Rich needs reading glasses: not because his eyes' muscles are weak,
    but because they've lost mechanical control of the optics within.
    for this vary, but I don't want to bore...

    My eyes' refractions are also dissimilar. Both are myopic, so I've
    wear glasses to drive, but I enjoy the same advantages as you do, just
    for closer things.

    James Arthur
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