The Galaxies in Your Eyes


Dr. Ronald A. Schachar
Department of Physics, UT Arlington




            The eye is our most valuable sense. It is small and like our other senses is amazingly sensitive. The eye can detect one photon. The young human eye can focus from infinity to 7cm in 350 msec. How the eye focuses for near, accommodation, has intrigued the greatest minds, including Thomas Young and von Herman Helmholtz. The mechanism of accommodation continues to be in controversy. By applying basic physics and mathematical modeling the mechanism of accommodation is elucidated. Interestingly, this basic understanding has wide applications to all objects of the universe.