Louis S. Jagerman MD, an experienced clinical ophthalmologist and science author, demystifies and explains the mathematical background for modern refractive surgery. No ophthalmologist needs to be perplexed by Zernike polynomials or Fourier transforms. No need for you to be intimidated by technical and mathematical intricacies of waterfronts, lenslets, and aberrometers. No need to dread questions from curious colleagues, educated patients, and persuasive salespersons. This short book, with its clear diagrams, well-explained equations, and extensive index, will provide a form grasp of the mathematical basis for your refractive practice. At the same time, you will witness how brilliant mathematics, drawn from diverse sources, can be applied to modern medical science and patient care.