constants of the eye

Average dimensions of the various parameters of the eye adopted to represent a typical eye. These vary slightly depending upon the authors, such as Donders, Gullstrand, Bennett-Rabbetts, etc. See reduced eye; schematic eye.

Table C7 Optical constants of an average adult Caucasian eye
structure or surface		refractive index		radius of curvature (mm)		distance from ant. surface of cornea (mm)
cornea		1.376		-		-
aqueous humour		1.336		-		-
lens (total)		1.42		-		-
vitreous humour		1.336		-		-
ant. corneal surface		-		7.8		0
post. corneal surface		-		6.7		0.5
ant. lens surface		-		10.6		3.6
accommodated		-		6.1		3.2
post. lens surface		-		26.2		7.2
accommodated		-		25.3		7.2
retina		1.363		-		24.1