Typically, ophthalmoscopy reveals clusters of saccular aneurysms filledwith dark venous blood. Superficial retinal hemorrhages are occasionally seen,but hard exudation has not been observed. In some cases, a gray-white preretinalmembrane can partly obscure the surface of the tumor. Although the retinalvasculature elsewhere is usually normal, other associated vascular anomaliescan occur. In early frames of the FFA, the vascular channels within the CHRremain hypofluorescent. As the angiogram progresses, these vascular channelsfill slowly with the dye. In late frames, a blood-fluorescein interface ischaracteristically observed in the saccular dilations within the tumor. Thisphenomenon seems to be related to sedimentation of erythrocytes in the inferioraspect of the venous aneurysm, which appears hypofluorescent. The presenceof plasma in the superior aspect of this vascular space, which stains withfluorescein, appears hyperfluorescent. There is no extravascular leakage ofdye in CHR.