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An indication for "granny glasses"
1Department of Ophthalmology, Mt. Sinai School of Medicine, New York, New York, USA.
Survey of Ophthalmology
|May 1, 1995
Abstract:
A young woman with a large astigmatic refractive error obtained no visual improvement with glasses. Repeated manifest refractions revealed persistent variations in the apparent cylinder axis. A suitable choice of spectacle frames facilitated a satisfactory outcome. The pitfalls inherent in the clinical specification of cylinder axis, and the potential visual consequences, are discussed.