Parameter (mm)

Male mean (SD)

Female mean (SD)

20 - 30 years

Vertical fissure

9.51 (0.9)

9.79 (1.1)

Horizontal fissure

29 (2.7)

27.96 (1.8)

Tarsal thickness

7.4 (2)

9.2 (2.1)

MDR1

3.61 (0.5)

3.5 (0.6)

Canthal position (Degrees of inclination)

3.5 (0.6)

4.2 (0.8)

31 - 40 years

Vertical fissure

9.41 (0.5)

9.69 (0.8)

Horizontal fissure

28.5 (2.2)

27.2 (1.2)

Tarsal thickness

7.3 (1.5)

9.25 (1.8)

MDR1

3.5 (0.4)

3.5 (0.4)

Canthal position (Degrees of inclination)

3.1 (0.4)

3.9 (0.9)

41 - 50 years

Vertical fissure

9.22 (0.6)

9.33 (0.4)

Horizontal fissure

28 (1.8)

27 (1.1)

Tarsal thickness

6.9 (1.1)

8.9 (0.8)

MDR1

3.1 (0.3)

3.3 (0.8)

Canthal position (Degrees of inclination)

2.2 (0.9)

2.7 (1.5)