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Method and findings for super-wide indocyanine green (ICG) angiography Kyoichi Takahashi 1 , Kanemitsu Muraoka 1 , Kenji Tokui 1 , Fumiko Machida 1 1Dept of Ophthalmol, Gunma Univ Sch of Med pp.1419-1426
Published Date 1994/7/15
DOI https://doi.org/10.11477/mf.1410903948
  • Abstract
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We studied the choroidal circulation by using a newly developed super-wide indocyanine greenangiography with scanning laser ophthalmoscope, SLO. The technique involves the use of a hand-heldsuperfield non-contact lens by Volk. It enables the observation of fundus area subtending 80 degrees across.Use of additional panoramic technique allows the observation of a wide fundus area up to the site of vortexveins. This technique was applied to 12 normal eyes and 42 eyes with various fundus disorders.

The short posterior ciliary arteries emerged in the papillomacular area to run radially towards theperiphery. We could identify 4 to 6 choroidal arterial groups. Watershed zone for the arterial system wasidentified in 61% of eyes. Watershed zone for the veins ran horizontally across the macula and verticallyacross the papillomacular area. The vortex veins ranged from 5 to 11 in number, average 7, in 34 examinedeyes. Eyes with carotid artery occlusion showed delay of onset of arterial inflow. Focal filling delays,signifying obliteration of choriocapillaris, were frequent features in triangle syndrome, geographic chor-oiditis and advanced diabetic retinopathy. The present technique was thus of value in evaluating thechoroidal circulation over a wide fundus area.


Copyright © 1994, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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