Astronomiae Pars Optica

Astronomiae Pars Optica is a discourse written by Johannes Kepler in 1604. The Astronomiae explained the reflection and refraction of light, and applied it to astronomical phenomena. Kepler extended his findings to the workings of the human eye, leading to his being considered the father of modern optical study. His findings included information on depth perception and the inversion of images within the eye. Kepler's studies also gave him the idea of making eyeglasses to alter the focusing point within the eye.