OT, Zenni Optical help!
Ivan Vegvary writes:
I was hoping to find a bifocal that will allow me to do
both with one set of glasses. Please advise.
Like another follow-up post says, add 1.5D to the spherical Rx, and specify
the bifocal adds to be 1.0D. Then you'll focus 2 feet straight ahead, and
16 inches down through the bifocals.
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