[list][*][url=http://www.opt.uh.edu/onlinecoursematerials/PHOP6241/Optics/Readings_Lecture_Notes/Atchison_Smith_Optics_of_the_Human_Eye.pdf]http://www.opt.uh.edu/onlinecoursematerials/PHOP6241/Optics/Readings_Lecture_Notes/Atchison_Smith_Optics_of_the_Human_Eye.pdf[/url][br][/*][/list]