This section leans heavily on Wyszecki and Stiles (1982) an excellent book.
The outermost layer of the eye through which light passes.
No blood vessels.
It is comprised of several layers and, therefore, the optical properties are measured for the whole cornea rather than generalizing from a tissue sample. (Le Grand, 1967)
convexity of a radius of about 8 mm
LeGrand's Full Theoretical Eye (from Wyszecki & Stiles, 1982, pg 99) Note that these values are for light of wavelength 589.3mu. For values which change as a function of wavelength see Le Grand, 1967 page 9.