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These prismatic glasses help focus peripheral vision and reduce eyestrain while reading for low vision individuals. Focal lengths range from 3.3" to 10" depending on strength.
Small lenses measure 45mm with a 6D diopter. Includes one year warranty.
These Coil reading glasses mean the difference between having to use a CC-TV all the time and you know you can't carry that to your local Wal-Mart. But these glasses I just wear them on a chain around my neck and have them handy all the time.