It was considered to indicate a bad prognosis. However, evidence suggests that it could be a non-specific indicator of diffuse brain edema which might not be as ominous as previously thought.
White cerebellum sign
Deep sulcus sign
Frontal release sign
Rey–Osterrieth complex figure
Blue field entoptic phenomenon
Warburg's tincture
Lhermitte's sign
Phaedra complex