Parameter (mm)

Male mean (SD)

Female mean (SD)

20 - 30 years

T-C

54.7 (6.6)

44.6 (5.8)

SOR-eyebrow

1.5 (0.7)

5.4 (3.3)

Eyebrow apex angle

6.2 (3.7)

7.7 (2.5)

31 - 40

T-C

56.1 (7.1)

44.1 (6.9)

SOR-eyebrow

1.6 (0.9)

5.1 (3.1)

Eyebrow apex angle

5.9 (3)

7.4 (2.1)

41 - 50

T-B

52.1 (5.5)

41.3 (4.4)

SOR-eyebrow

1.1 (0.7)

4.4 (2.5)

Eyebrow apex angle

4.6 (2.1)

6.7 (2.2)