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Article
March 1970

Binocular Reading Additions for Low VisionReport of 120 Cases

Author Affiliations

Short Hills, NJ
From the Department of Ophthalmology, New York University School of Medicine, New York.

Arch Ophthalmol. 1970;83(3):294-299. doi:10.1001/archopht.1970.00990030296005
Abstract

Binocular reading additions from + 4.00 D to + 14.00 D were prescribed to 120 patients. Fifty percent of corrections were prescribed for patients with macular degeneration and cataracts, and nearly 25% to patients with heredo-degeneration of the macula. Sixty percent of corrections were prescribed for vision ranging from 20/200 to 20/ 100. Ninety-two percent of corrections were prescribed in the form of bifocals or half-eye glasses. Bifocals make the most inconspicuous optical aid and are indicated when there is a significant distant correction. Half-eye glasses were prescribed for 64%. These are ideal because the lenses can be made small. Bifocal segments must be decentered in 1 mm for each diopter of reading addition for each eye, or 1Δ of base-in prism must be incorporated for each diopter of reading addition for each eye. Eighty-eight percent were judged successful.

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