This page is dedicated to transforming the pseudophakic eye composed of two thick lenses (cornea and IOL) into a single element provided with its principal planes and focal distances. If one knows the value of the paraxial constants of the cornea and the IOL (derived from their respective curvatures and thickness), one can establish, thanks […]

This page aims to demystify the concept of “principal planes,” which often appear to be quite “esoteric” to non-specialists. In a thick lens system, the principal planes are two hypothetical planes at which all the refraction can be considered to happen. They are used to establish a paraxial simplified model, making it possible to predict […]