Papilledema grades

Funduscopy findings

Grade I

Characterized by a C-shaped halo with a temporal gap

Grade II

The halo becomes circumferential

Grade III

Characterized by loss of major vessels as they leave the disc

Grade IV

Characterized by loss of major vessels on the disc

Grade V

Has the criteria of grade IV plus partial or total obscuration of all vessels of the disc

Reference

http://webeye.ophth.uiowa.edu/eyeforum/cases/papilledema-grading.htm