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Article
March 1950

HYPERPHORIAA Statistical Study

Author Affiliations

Chief Orthoptist, Motility Clinic, Washington University ST. LOUIS
From the Department of Ophthalmology, Washington University School of Medicine, and the Oscar Johnson Institute.

Arch Ophthalmol. 1950;43(3):458-465. doi:10.1001/archopht.1950.00910010467006
Abstract

TOTAL hyperphoria is made up of two parts: (a) manifest hyperphoria, which appears almost immediately after the two eyes are dissociated, and (b) latent hyperphoria, which appears only after prolonged dissociation of the two eyes. Various tests for heterophoria elicit varying amounts of hyperphoria because they convert varying amounts of latent hyperphoria into manifest hyperphoria, which may be observed and measured.

PURPOSE OF THE STUDY  This study is essentially statistical in character. A statistical study of hyperphoria will elicit some general facts about the condition. There are, unfortunately, too few such studies on record.

THE SAMPLE  The sample was composed of 1,476 private patients. It was a selected sample in that all were persons presenting themselves at an ophthalmologist's office. Some came because of asthenopia, but many came for other reasons, such as a foreign body in the eye or conjunctivitis. All patients had refraction, and glasses were prescribed when

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