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George L. Spaeth, MD
Philadelphia, Pa

Arch Ophthalmol. 1990;108(6):781.

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

To the Editor.

—I found especially interesting Flynn and Brod's¹ letter in the ARCHIVES on protection from operating microscope-induced retinal phototoxicity during pars plana vitrectomy.

Retinal phototoxicity is of special importance in patients with glaucoma. It matters relatively little, and probably not at all from a functional point of view, when an individual with a normal complement of retinal receptors and appropriate connections to the geniculate body has a small percentage of neuronal elements temporarily or even permanently damaged. However, in the patients with far-advanced glaucoma, who may have only a tiny percent of their neurons remaining, often concentrated in the macular area, damage or death of five to ten thousand neurons may represent a devastating loss.

My colleagues and I have had one patient with far-advanced glaucoma experience a diminution of visual acuity from 6/9 to 6/15, following photography of his optic discs. Some of the loss of . . . [Full Text PDF of this Article]

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