Prescription glasses in which the lenses are horizontally divided into two parts, each with a different refractive strength. Usually the upper part is for distant or normal vision, while the lower part is for reading or other close-up work.
"Beauty does not linger, bifocals and words, June 26, 2015" by Bill Daly is licensed under Public Domain.
A06 People of Darkness (03-06) p. 154 A06 People of Darkness (03-06) p. 156 A06 People of Darkness (03-06) p. 157
Medical Dictionary, The Free Dictionary Online 2015 Bifocal Glasses. http://medical-dictionary.thefreedictionary.com/bifocal+glasses, accessed April 13, 2015.
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