The Theory Of Ocular Defects And Of Spectacles (1869)

The Theory of Ocular Defects and of Spectacles is a book written by Hermann Scheffler and originally published in 1869. The book provides a comprehensive explanation of the various defects of the eye and the use of spectacles as a remedy for these defects. Scheffler's work is based on his extensive research and observations of the human eye, and his theories and explanations are presented in a clear and concise manner.The book is divided into two parts. The first part deals with the anatomy and physiology of the eye, including the structure of the eye, the function of the various parts of the eye, and the mechanisms of vision. The second part of the book focuses on the use of spectacles as a means of correcting visual defects, including nearsightedness, farsightedness, and astigmatism. Scheffler explains the principles of optics and the different types of lenses used in spectacles, and provides detailed instructions for the fitting and adjustment of spectacles.The Theory of Ocular Defects and of Spectacles is a valuable resource for optometrists, ophthalmologists, and anyone interested in the science of vision. Scheffler's work remains relevant today, as the principles he discusses are still used in the design and fitting of eyeglasses and contact lenses.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.