Central Retinal Vein Occlusion

Criteria to Differentiate Ischemic from Non-Ischemic CRVO

Based on my experience of about 700 cases of CRVO over the years, I have developed diagnostic parameters to differentiate the 2 types of CRVO^1,2. A prospective study of these parameters and their usefulness to differentiate ischemic CRVO from non-ischemic CRVO during the early phases of the disease revealed the following².

These tests can be divided into functional tests and morphological tests. Function tests consist of visual acuity, peripheral visual fields, relative afferent pupillary defect, and electroretinography. Morphological tests are: ophthalmoscopy and fluorescein fundus angiography.