© 2008

Assistive Technology for Visually Impaired and Blind People

  • Marion A. Hersh
  • Michael A. Johnson

Table of contents

  1. Front Matter
    Pages i-xxvii
  2. Marion A. Hersh, Michael A. Johnson
    Pages 1-50
  3. David Keating, Stuart Parks
    Pages 103-133
  4. Gunnar Jansson
    Pages 135-166
  5. Marion A. Hersh, Michael A. Johnson
    Pages 167-208
  6. Brian Hoyle, Dean Waters
    Pages 209-229
  7. Nicholas Bradley, Mark Dunlop
    Pages 231-260
  8. Elizabeth M. Ball
    Pages 289-321
  9. Marion A. Hersh, Michael A. Johnson
    Pages 323-361
  10. Tai Fook Lim Jerry, Han Leong Goh, Kok Kiong Tan
    Pages 363-384
  11. Marion A. Hersh, Michael A. Johnson
    Pages 385-448
  12. Gareth Evans, Paul Blenkhorn
    Pages 449-495
  13. Rüdiger Hoffmann
    Pages 497-554
  14. James Fruchterman
    Pages 555-580
  15. David Crombie, Roger Lenoir
    Pages 581-613
  16. Marion A. Hersh, Michael A. Johnson
    Pages 615-657
  17. Marion A. Hersh, Michael A. Johnson
    Pages 659-707
  18. Back Matter
    Pages 709-725

About this book


Equal access to services and public places is now required by law in many countries. In the case of the visually impaired, it is often the use of assistive technology that facilitates their full participation in many societal activities ranging from meetings and entertainment to the more personal activities of reading books or making music. In this volume, the engineering techniques and design principles used in many solutions for vision-impaired and blind people are described and explained.


• a new comprehensive assistive technology model structures the volume into groups of chapters on vision fundamentals, mobility, communications and access to information, daily living, education and employment, and finally recreational activities;

• contributions by international authors from the diverse engineering and scientific disciplines needed to describe and develop the necessary assistive technology solutions;

• systematic coverage of the many different types of assistive technology devices, applications and solutions used by visually impaired and blind people;

• chapters open with learning objectives and close with sets of test questions and details of practical projects that can be used for student investigative work and self-study.

Assistive Technology for Vision-impaired and Blind People is an excellent self-study and reference textbook for assistive technology and rehabilitation engineering students and professionals. The comprehensive presentation also allows engineers and health professionals to update their knowledge of recent assistive technology developments for people with sight impairment and loss.


Accessibility Assistive Technology Bat Cane Blind Braille Global Positioning Systems Haptics Information Ophthalmology Partial Sight Rehabilitation Rehabilitation Engineering Sight Measurement Vision-impaired physiology

Editors and affiliations

  • Marion A. Hersh
    • 1
  • Michael A. Johnson
    • 2
  1. 1.Department of Electronics and Electrical EngineeringUniversity of GlasgowGlasgowUK
  2. 2.Industrial Control Centre, Graham Hills BuildingUniversity of StrathclydeGlasgowUK

About the editors

Dr Hersh is currently a senior Lecturer in the Department of Electronics and Electrical Engineering, University of Glasgow. She was previously a lecturer in this Department. She has also held posts as a Post-doctoral Research Fellow at the Universities of Sussex and Strathclyde. She has now been researching in the area of assistive technology for about 12 years.

Her current research interests fall into four main areas:

• Assistive technology, particularly for people with sensory impairments.

• Ethics and Social Responsibility Issues in Science and Engineering.

• Good design practice, including the principles of sustainable and universal design, end user involvement and human centred design approaches.

• The research process.

She is continuing to run the successful CVHI conference series ‘Conference and Workshop on Assistive Technologies for People with Vision and Hearing Impairments’, which she initiated with Prof Mike Johnson of the University of Strathclyde. Funding for the first three events was obtained from the EC High-Level Scientific Conferences Programme and the current funding for three further events, of which one has already taken place. Distinctive features of this conference series include the support given to young researchers and the conference ambience which encourages networking.

Current research projects in the area of assistive technology include the development of a communication and interface device for deafblind people, distance learning for people with mobility impairments with colleagues from Germany, Hungary and Romania and travel support technology for blind people with colleagues from France. Having been a workaholic for most of her life, Dr Hersh has recently become aware of the importance of making leisure activities accessible. Research carried out for the book has confirmed the lack of technology to support the involvement of blind people in sport and other leisure activities. Research projects in this area include technological support for learning swimming and cycling in quiet areas for blind people.

Dr Hersh recently published Mathematical Modelling for Sustainable Development with Springer Verlag (2006). It is organised into three parts, each of which considers the application of a particular type of mathematical or computing technique to problems in sustainable development. Particular features of the book include the large number of examples of the application of the techniques to problems in sustainable development, the detailed case studies, for instance of the application of systems theory to sustainable waste management and the introduction of fuzzy set techniques she developed. She has worked on applications of these techniques in collaboration with colleagues from Germany and Romania.

Dr Hersh’s awareness of the importance of interdisciplinarity for successful research in assistive technology has led her to an examination of the research process and publications on interdisciplinary work and research cultures with colleagues from Wales.

Dr Hersh is a Member of the Institute of Mathematics and its Applications, the Institution of Engineering and Technology (UK) and the Institute of Electronic and Electrical Engineers (USA).

Professor Johnson’s academic career has concentrated on control engineering, theory and applications. He has significant industrial control applications and research experience. He is the author and co-author of books and technical papers on power generation, wastewater control, power transmission, and control benchmarking. He has had a number of student projects in the area of assistive technology and has successfully trained over 40 engineers to PhD level in last 20 years. He is joint Editor to Springer-Verlag-London monograph series Advances in Industrial Control and to the Springer-Verlag-London Advanced Textbooks in Control and Signal Processing series. He was an Associate Editor for Automatica in the years 1985-2002.

His interest in Assistive Technology came through undergraduate teaching commitments which included student group study dissertations at 2nd Year level and assorted project supervision at Masters and undergraduate level. These were used to explore some EEE aspects of assistive devices for the hearing impaired. Subsequent collaboration with Dr. Hersh at the University of Glasgow led to a set of targeted activities in this area. These include a new course module, a new conference series and some research projects.

Professor Johnson retired from academic life in 2002 and was made an Emeritus Professor of the University of Strathclyde in 2003. Emeritus Professor Johnson is a member of Deafblind, UK and the British Retinitis Pigmentosa Society.

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