This classic series by Dr. Kraskin, originally published by OEP in 2 volumes from 1981 to 1983, has been revised and reformatted into a single volume. The behavioral concept of vision recognizes that the critical element involved in the control and altering of behavior is a lens, wrote Kraskin in the original Introduction to Lens Power in Action. Lenses are the basic tool for the optometrist who practices behavioral vision care. Kraskin gives the reader a thorough overview of how optometrists uselenses to treat and prevent vision problems.

The notion of technological power is fast becoming an object of both academic and policy discourses. Within such discourses one can observe several different senses of power being employed, especially when viewed from a multi-disciplinary angle. This demonstrates the need for the creation of a cross-disciplinary and integrative framework for identifying and clarifying different conceptions of the relations between technology and power. In this respect, the book aims to offer an empirically-informed philosophical framework for understanding the technological construction of power, which allows for a differentiated vocabulary for describing various senses of technological power, while bridging together social and political theory, critical studies of technology, philosophy and ethics of technology. In addition, the framework presented in this book aims to contribute to better critical and ethical evaluation of technologies and their powers. Any adequate ethics or critique of technology must be based on a better, clearer, and more nuanced and differentiated understanding of the many ways in which technology can be described as ‘powerful’.

Understand and meet your patients' eyewear needs with the reference that covers every aspect of dispensing ― from basic terminology to frame selection to eyewear fitting, adjusting, and repairing. System for Ophthalmic Dispensing, 4th Edition, provides a step-by-step system for properly fitting and adjusting eyewear, including the nuances of lens selection, making it an ideal resource both for students who are just learning about dispensing and practitioners who want to keep their skills up to date. Thorough discussions of every topic and hundreds of newly revised and enhanced review questions make this a one-stop educational and clinical resource for today's eyecare professionals. - Explains the "how" and "why" behind lens selection to help you better understand and meet the vision needs of those you serve. - Includes in-depth discussions of all types of lenses, including multifocal, progressive, absorptive, safety, recreational, aspheric, high index, and lens coatings. - Provides updated coverage of the latest dispensing procedures and equipment. - Discusses the use of spectacle lenses for the control of myopia. - Contains more than 700 high-quality figures demonstrating how to adjust frames, the optics of lenses, and how light travels through lenses. Photos are all taken from the perspective of the person who is adjusting the frame. - Features more than 600 interactive review questions along with answers, explanations, and worked problems—all newly revised for this edition. - An eBook version is included with purchase. The eBook allows you to access all of the text, figures and references, with the ability to search, customize your content, make notes and highlights, and have content read aloud.