Eyes that met the following criteria were excluded: 1) vitreous hemorrhage or cataract-like media opacities, 2) foveal avascular zone
irregularities detected by Fundus fluorescein angiography, 3) six clock hours or more of macular capillary non-perfusion on Fundus fluorescein angiography, 4) any neovascularizations, 5) history of vitreoretinal surgery, or 6) preoperative vitreomacular interface disease detected by optical coherence tomography.
Using an optical coherence tomographic angiography system, automated measurements of retinal nerve fiber layer thickness, ganglion cell layer thickness, inner and outer foveal thickness, vascular density, macular volume, and foveal avascular zone
were collected for both eyes.
Alterations of the foveal avascular zone
measured by optical coherence tomography angiography in glaucoma patients with central visual field defects.
AngioAnalytics brings objective data and analysis to Optovue's AngioVue OCTA technology which allows for high-resolution imaging of retinal blood vessels to create color-encoded maps of the vessel densities of the retina or optic nerve, and provide analyses of areas where there is blood vessel loss, abnormal blood vessel growth, or change to the foveal avascular zone
Yoshimura, "Foveal cystoid spaces are associated with enlarged foveal avascular zone
and microaneurysms in diabetic macular edema," Ophthalmology, vol.
OCTA also provides information on the dimensions and shape of the foveal avascular zone
(FAZ), changes in which are most likely related to macular ischemia, especially in DR [14-17].
After one more month OCTA revealed enlargement of the foveal avascular zone
and broken foveal capillary ring in the superficial capillary plexus (SCP) and deep capillary plexus (DCP).
Fundus Florescence Angiography was done to identify margins of foveal avascular zone
, to rule out macular ischemia and determine the boundaries for macular grid laser application.
Natural course of choroidal neovascular membranes within the foveal avascular zone
in senile macular degeneration.
Normal visual acuity can remain despite a greatly enlarged foveal avascular zone
. (24) In addition to the presence of an enlarged foveal avascular zone
is the macular depression sign; this represents atrophy and thinning of the inner retinal layers which can be seen with optical coherence tomography (OCT) and may be associated with a reduction in vision (see Figure 3).
About 150 to 300 burns were applied 500 micron away from the foveal avascular zone
. Follow-up visits were performed at two-week intervals for two months and then every month after treatment.
Fluorescein angiography can also be used to assess the outline characteristics of the foveal avascular zone
(FAZ), as reported in the Early Treatment Diabetic Retinopathy Study group report 11 .