Atrophia gyrata choriodeæ et retinae is differentiated from retinitis pigmentosa by the prominence of the choroidal atrophy, which dominates the ophthalmoscopic picture. The appearance of the atrophy in the shape of round spots, constantly increasing in size, suggests that it starts in the middle of an area supplied by a single vessel, and advances toward the periphery. It is known that the smallest arteries of the choroid which pass from the middle vessels to the capillary layer divide here into numerous radiating capillaries. It is possible that these groups of capillaries may have a part to play in this disease. In any case, this disease seems to demonstrate that chronic degeneration of the retina in general, the different forms of which I have just dealt with, is preceded by a primary disease of the choroid.
A look at the past . . . Arch Ophthalmol. 2000;118(10):1427. doi:10.1001/archopht.118.10.1427
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