Peripapillary circle of Zinn-Haller revealed by fundus fluorescein angiography

Peripapillary circle of Zinn-Haller revealed by fundus fluorescein angiography.

AIMS To observe the vascular pattern of the peripapillary circle of Zinn-Haller in humans by fundus fluorescein angiography. METHODS 307 cases (from 212 patients) of fundus fluorescein angiograms performed in patients with myopic degeneration were evaluated to find the circle of Zinn-Haller and to observe its fundus fluorescein angiographic features. RESULTS 15 cases (from 13 patients) with...

Peripapillary Arterial Circle of Zinn-Haller: Location and Spatial Relationships with Myopia

PURPOSE To measure histomorphometrically the location of the peripapillary arterial circle of Zinn-Haller (ZHAC) and assess its associations with axial length. METHODS Using a light microscope, we measured the distance from the ZHAC to the peripapillary ring (optic disc border), the merging point of the dura mater with the posterior sclera ("dura-sclera point"), and the inner scleral surface....

Fundus photography and fluorescein angiography Fluorescein angiography

Fluorescein angiography is a clinical diagnostic test procedure in which rapid-sequence photography is performed after intravenous injection of sodium fluorescein. The procedure allows the documentation of the retinal circulation. Of equal importance is the ability of the angiogram to outline the entire retinal vascular bed. Previous clinical methods of examination of the fundus enabled the phy...

Fundus photography and fluorescein angiography.

Funages: an Expert System for Fundus Fluorescein Angiography Funages: an Expert System for Fundus Fluorescein Angiography

both the computational and the medical side of these concerns began to develop mutual interests and approaches, and to form coherent col-laborative research [1]. One of the first uses of artificial intelligence (AI) on a practical level was the coupling of expert medical knowledge with computer-based technology. As early as the 1960s, computer scientists and physicians recognized the possibilit...