Table 1.

Photonumeric scale for dark circles, with written descriptors and corresponding representative images, compiled from a database of facial images and the consensus opinion of a panel of expert evaluators

Grade	Descriptor	Representative Image
0	No dark circles
1	Barely perceptible dark circles
2	Slight dark circles
3	Mild dark circles
4	Mild to moderate, noticeable dark circles
5	Moderate, obvious dark circles
6	Moderate to pronounced dark circles
7	Pronounced, distinct dark circles
8	Pronounced, significant dark discoloration
9	Extensive, severe dark discoloration