In this report we identify the most promising directions for research on the mobility problems of visually impaired and blind people. We show that information is not generally available on the number of people who might benefit from electronic travel aids. Although we have made some guesses about the prevalence of visual impairment and blindness in the United States, we believe them to be underestimates of the true rates. Better information is needed about this population and should be collected with certain variables in mind: age, onset, degree of impairment, and certain social factors such as income level. Information is also not available on the use of electronic travel aids. More extensive follow-up studies are needed to determine the usefulness and success of particular devices.

Foundations of Orientation and Mobility, the classic professional reference and textbook has been completely revised and expanded to two volumes by the most knowledgeable experts in the field. The new third edition includes both the latest research in O&M and expanded information on practice and teaching strategies. Volume 1, History and Theory, includes the bases of O&M knowledge, including perception, orientation, low vision, audition, kinesiology, psychosocial issues, and learning theories, as well as chapters on technology, dog guides, orientation aids, and environmental accessibility. A section on the profession of O&M includes its international history; administration, assessment and program planning; and a chapter on research in O&M. No O&M student or professional can afford to be without this essential resource.

Equal accessibility to public places and services is now required by law in many countries. For the vision-impaired, specialised technology often can provide a fuller enjoyment of the facilities of society, from large scale meetings and public entertainments to reading a book or making music. This volume explores the engineering and design principles and techniques used in assistive technology for blind and vision-impaired people. This book maintains the currency of knowledge for engineers and health workers who develop devices and services for people with sight loss, and is an excellent source of reference for students of assistive technology and rehabilitation.