The human eye and its aberrations

The human eye is examined in terms of its optical properties and aberrations. The eye’s fundamental imaging properties, in terms of focal lengths, cardinal points as well as chromatic and monochromatic aberrations are explored. An overview of existing schematic eye models is provided. A new schematic eye model is developed that incorporates these clinically found features as well as provides the dynamic behavior of the eye as it accommodates. Furthermore, techniques for measuring the optical aberrations such as the Shack-Hartmann wavefront sensor and fixing errors in the eye with procedures such Laser in situ keratomileusis (LASIK) are discussed.