papilledema

https://doi.org/10.1351/goldbook.11988
Edema of the region of the head of the optic nerve in the retina (the optic disc).
Note: Often caused by increased intracranial pressure.
Source:
PAC, 2015, 87, 841. (IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)) on page 894 [Terms] [Paper]