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Excerpt from Ocular Refraction and the Shadow TestA science is founded, not upon uncertainties, but upon facts, therefore, subjective examination of the eye is not scientific, though we grant that it has its place and should be used. It is only within the past few years, that the diagnosis of errors of refraction and their correction by the use Of glasses has been scientific. Examination being conducted objectively, the refractive condition of...

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Excerpt from Ocular Refraction and the Shadow Test This book is dedicated to the advancement of the science of optometry, and to those willing workers in the field who are ambitious for its advancement and who are laboring to that end. The correction of errors of refraction of the eye with lenses is a noble work, involving the betterment of conditions under which mankind is enabled to enjoy the most valuable of the five senses, viz., sight. ...

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