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Article
October 1953

SIMULATED PROGRESSION OF VISUAL FIELD DEFECTS OF GLAUCOMA

Author Affiliations

NEW YORK; PHILADELPHIA
From the Institute of Ophthalmology, Presbyterian Hospital (Dr. Day), New York.; From the Department of Ophthalmology, Hospital of the University of Pennsylvania, University of Pennsylvania School of Medicine, Graduate School of the University of Pennsylvania (Dr. Scheie), and the Children's Hospital of Philadelphia.

AMA Arch Ophthalmol. 1953;50(4):418-433. doi:10.1001/archopht.1953.00920030426002
Abstract

THIS PAPER emphasizes certain ocular factors which, by reducing the intensity of the retinal stimulus from a test object, may cause simulated progression of the visual field defects of glaucoma and thereby give misleading information regarding the glaucomatous state. Some pertinent clinical and experimental observations are presented. The factors investigated by us were changes in transparency of the ocular media, refractive disturbances, and miosis. All these conditions diminish the amount of light falling upon a given area of the retina from a given test object. The size of any visual field defect which might be present therefore increases correspondingly. Emphasis on the effects of these factors upon the visual field changes of chronic simple (wide-angle) glaucoma is of great importance because visual field studies offer the most reliable method of evaluating the effectiveness of medical therapy. Likewise, progressive enlargement of visual field defects serves as the best and most dependable

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