Optical Formulas Tutorial by Ellen D. Stoner, Patricia Perkins, Roy Ferguson (2005, Paperback)

Great and simple explanations. Begins from basic Math in case you need to refresher or you can skip to your personal knowledge. Goes into the exact Optical applications with explanations and graphics. Numerous exercises and hands on examples. Ideal if you are preparing for any of the Optician/Ophthalmic Exams or if you are a student or plan to be. Covers every possible Optical formulas including those for the Advance Exams. Extremely better than the first edition.