Table 1.

External ocular surface areas.

Palpebral Aperture
mm2	Methodology	Reference
600	Unreported	[5]
226–426	Digitized video images	[25]
300–640	Digitized video images	[26]
Total Ocular Surface Area
3200	Designed instrument	[27]
3738	Molds of cadaver eyes	[38]
Total Orbital Aperture Area
2509 (estim)	CT Scan	[32]
1793–1987	Radiographs	[33]