What is one key feature of central retinal vein occlusion?

Severe retinal hemorrhages are a hallmark feature of central retinal vein occlusion (CRVO). This condition occurs when there is a blockage in the central retinal vein, leading to increased pressure within the retinal vessels. The resulting congestion causes blood and fluid to leak into the retina, resulting in diffuse retinal hemorrhages. These hemorrhages can appear in various forms, such as flame-shaped or dot-and-blot type, and are usually widespread across the retina, which is characteristic of CRVO. The presence of these hemorrhages is critical in distinguishing CRVO from other ocular conditions.

In addition to retinal hemorrhages, CRVO can cause other symptoms, including variable degrees of vision loss. However, the significant finding of severe retinal hemorrhages serves as a key diagnostic indicator for clinicians when they assess patients presenting with symptoms suggestive of retinal vascular issues.