Images of perimacular retinal whitening associated with an ischemic central retinal vein occlusion with extensive submacular fluid. (a) Color fundus photograph shows dilated veins, intraretinal hemorrhage and a perimacular, partial annulus of ischemic retinal whitening (black arrow). (b) Red-free photograph of the same eye. It may be easier to see the ischemic whitening (purple arrow) with red-free photography. (c) Scanning laser ophthalmoscopic fundus photograph of the same eye. Ischemic whitening is probably best visualized this way (yellow arrow). The OCT is decentered in this patient with poor central visual acuity, as shown by the nonfoveal location of the green crosshairs. (d) Radial line-scan OCT image shows marked subretinal fluid and little intraretinal thickening. (e) ETDRS grid with mean subfield thicknesses. The central subfield thickness of 1,264 μ is composed primarily of subretinal fluid and does not reflect marked intrinsic retinal thickening. (f) Frame from the laminar venous phase of the fluorescein angiogram shows some irregularity of the border of the foveal avascular zone and slight enlargement in the foveal avascular zone diameter. (g) Frame from the late phase of the fluorescein angiogram showing fluorescein leakage from the posterior pole vessels and hyperfluorescence of the disc. This patient later developed anterior segment neovascularization and neovascular glaucoma
2.24, 2.25, and 4.5).
2.25 – point to the ischemic nature of the CRVO in the face of a
relatively innocuous fluorescein angiogram. .
2.25 and 4.6.
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