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December 1938

An Introduction to Clinical Scotometry.

Author Affiliations

By John N. Evans, M.D., F.A.C.S. Cloth. Price, $4. Pp. 266, with 57 illustrations, appendixes and bibliography index. New Haven, Conn.: Yale University Press, 1938.

Arch Ophthalmol. 1938;20(6):1117-1118. doi:10.1001/archopht.1938.00850240233022

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In the first six chapters of this book the author gives in detail the history of angioscotometry, a description of the equipment and the technic. In the remaining eight chapters he describes in detail the normal angioscotoma and compares it with angioscotomas found in primary ocular disease and with those associated with lesions of the nerve bundles. The appendixes contain much important data.

The author believes that an angioscotoma is not the actual measurement of vessel shadows but is a measure of the perivascular space. A hypothesis has been devised correlating the angioscotoma with the widening of the perivascular space which produces a dysfunction of the synapses in the retina due to oxygen deprivation. This theory is supported clinically in that although the retinal arterioles are narrowed by pressure on the globe, the angioscotoma becomes wider.

Angioscotomas produced by retinal edema, diseases of the nasal accessory sinuses, glaucoma,

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