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Practical Value for Diagnosis, Prognosis, and Treatment

GIAMBATTISTA BIETTI, M.D.

AMA Arch Ophthalmol. 1953;49(5):491-513.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

ANOXIA

THE EFFECTS of anoxia on the normal visual apparatus are well known,¹ and my collaborators and I have made a number of contributions to this field.² I should like only to recall that anoxia is able to produce changes in the neurosensory activity, in the intraocular circulation, in the intrinsic and extrinsic ocular motility, and in the normal transparency of the ocular media. As a general rule, one may assume that anoxia has a twofold influence on the visual organ: a direct one, and an indirect one, through general, nervous, and circulatory mechanisms.

Neurosensory Activity.

—It is known, first of all, that there is in anoxia a reduction of the central visual acuity,³ which is especially pronounced at low illumination.⁴ I noted a comparable reduction in the resolving power of the retina.^2z The visual field shows a slight concentric narrowing,⁵ whereas the blind spot, . . . [Full Text PDF of this Article]

Author Affiliations
PARMA, ITALY

Professor of Ophthalmology and head of the Department of Ophthalmology, University of Parma.

Footnotes
Read before the Section of Ophthalmology at the One Hundred First Annual Session of the American Medical Association, Chicago, June 11, 1952.

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