Optic cup (ophthalmology)

Optic cup
Wiggle stereogram showing the optic cup in a healthy eye
Details
Identifiers
Latin	excavatio disci
TA	A15.2.04.020
FMA	77664
Anatomical terminology []

The optic cup is the white, cup-like area in the center of the optic disc.

The ratio of the size of the optic cup to the optic disc (or cup-to-disc ratio) is measured to diagnose glaucoma. A normal cup to disc ratio is 0.3; a larger ratio may suggest glaucoma.