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Richard J Kinch Richard J Kinch is offline
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Default 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.