Dimensions of the Human Eye (Average)

Globe:

Axial length along the visual axis: 24 mm (21 – 27 mm)

Vertical diameter: 23 mm
Horizontal diameter: 23.5 mm
Circumference at the equator: 73.5 mm

Cornea:

Horizontal diameter: 12 mm
Vertical diameter: 11 mm
Radius of curvature: anterior surface 7.86 mm
posterior surface 6.7 mm

Anterior Chamber; Lens; Pupi:

Anterior Chamber Depth (at center of cornea): 3.68 mm (2.7 – 4.2 mm)
             Diameter: 12 – 14 mm  (slightly larger than the cornea)

Lens:     Horizontal diameter: 9 – 10 mm
              Anterior-posterior thickness: 4.5 mm 
              Anterior curvature: 10 mm
              Posterior curvature: 6 mm

Pupil: varies from 1.3 mm to 8mm

Lid and Miscellaneous

• Lid Margin; 2mm wide

• Lashes: Top: 8 -12 mm; numbering 100 to 150

              Bottom: 6 -8 mm; numbering 50 to 75

• Blink Rate: average 12 to 15 per minute; males blink more than females.
• Blink duration .3 t0 .4 seconds