Abstract
The ophthalmic artery can be demon-strated angiographically from 1.22-2.33 sec. after the injn. of 10 ml. of 35% diodone into the common or internal carotid artery. The choroidal plexus of the eye becomes apparent from 2 to 5.5 sec. after the injn. It would, therefore, appear that the plexus shadow is cast mainly by the venous channels. During angiography there is a momentary spasm of the retinal artery.

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