ABSTRACT
Following is a description of the most important optical device: our own eye. Because the eye is a fluid very similar to water, it is difficult to take one apart and measure its parameters. Various researchers have measured the curvature of the cornea in live people as well as measuring frozen sections of eyes from cadavers. Curvatures and positions of the internal surfaces of the eye also may be measured with a telescope and the image position of the surface in question may be noted. Making an assumption for the refractive index for the medium, the actual location of the surface is calculated. The most comprehensive work was done by Gullstrand (1924). This analysis is based on that data. This is also presented as Table 1 in Charman (1995) as well as in Emsley (1953).
