Skiascopy Without The Use of Drugs: A Practical Treatise for Optometrists is a book written by Robert Minturn Lockwood in 1906. This book is a guide for optometrists who want to learn the technique of skiascopy, which is a method of determining the refractive error of the eye without the use of drugs. The book provides a detailed explanation of the skiascopy technique, including the equipment needed, the proper positioning of the patient, and the interpretation of the results. The author also discusses the advantages of skiascopy over other methods of determining refractive error, such as the use of drugs. The book is written in a clear and concise manner, making it easy for optometrists to understand and apply the skiascopy technique in their practice. Overall, Skiascopy Without The Use of Drugs is an important resource for optometrists who want to expand their knowledge and skills in the field of eye care.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.