Synchronous bilateral fluorescein angiography. A new technique.

Simultaneous angiography of both eyes allows the synchronous measurement of the arm-retina-time and the retinal circulation time in each eye. The dye-filling pattern of retinal arteries, choroid, disc, and cilioretinal vessels can be compared. A new method of simultaneous fluorescein angiography of both eyes, using two fundus cameras, is demonstrated. Each camera is operated by a separate power unit, thereby providing sufficient light energy for one picture every 0.6 second. The fluorescein is injected by means of an automatic injector in order to create a compact dye bolus. Simultaneous angiograms of a healthy patient and of a patient with unilateral carotid occlusion are shown.