However, if retinal capillary non-perfusion involves the perifoveal region, then vision is dramatically and irreversibly lost. It is not indicated initially, as the fresh hemorrhage will block transmission and reveal no useful information, but later in the disease it will provide information about retinal capillary perfusion and whether or not the occlusion is ischemic and thus more likely to foster neovascularization. Monitor the patient monthly with serial ophthalmoscopy, fundus photography and goniscopy until you see resolution. Central retinal vein occlusion patients with vision reduction due to macular edema do not benefit from the proceudre, according to new research. Due to the association of systemic disease with vein occlusions, co-manage the patient with an internist.
Ischemic occlusions are likely to present with a relative afferent pupillary defect.
If not, then it is likely non-ischemic.