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Screen Magnifiers: Evolution and Evaluation
September/October 2003 (vol. 23 no. 5)
pp. 54-61
Paul Blenkhorn, University of Manchester Institute of Science and Technology
Gareth Evans, University of Manchester Institute of Science and Technology
Alasdair King, University of Manchester Institute of Science and Technology
Sri Hastuti Kurniawan, University of Manchester Institute of Science and Technology
Alistair Sutcliffe, University of Manchester Institute of Science and Technology

Screen magnifiers are widely used by people with visual impairments. This article presents a number of architectures for screen magnifiers. It discusses a wide range of issues related to screen magnifiers and their user interfaces. A usability study of a joystick-controlled screen magnifier is then presented. Finally, the authors suggest that performing a usability evaluation with the prospective users of screen magnifiers provides a better understanding of issues related to features and control.

1. D.G. Evans and P. Blenkhorn, "Architectures of Assistive Software Applications for Windows-Based Computers," to be published in J. Computer and Network Applications, vol. 26, 2003, pp. 213-228.
2. A. Baude, P. Blenkhorn, and D.G. Evans, "The Architecture of a Windows 9×Full Screen Magnifier using DDI Hooking," Proc. Assistive Technology—Added Value to the Quality of Life (AAATE 2001), IOS Press, 2001, pp. 113-118.
3. P. Blenkhorn, D.G. Evans, and A. Baude, "Full Screen Magnification Using DirectX Overlays," IEEE Trans. Neural Systems and Rehabilitation Eng., vol. 10, no. 4, 2002, pp. 225-232.
4. S. Kurniawan et al., "A Usability Evaluation of a Joystick-Operated Full-Screen Magnifier," Universal Access: Theoretical Perspectives, Practice, and Experience, LNCS 2615, Springer-Verlag, 2003, pp. 375-386.
5. R. Kosara, S. Miksch, and H. Hauser, "Focus + Context Taken Literally," IEEE Computer Graphics and Applications, vol. 22, no. 1, 2002, pp. 22-29.
6. K. Dusling and M. Uslan, "Product Evaluation: Choosing a Screen Magnifier," AccessWorld, vol. 3, no. 1, 2002, p. 12.
7. A.K. Mithal and S.A. Douglas, "Differences in Movement Microstructure of the Mouse and the Finger-Controlled Isometric Joystick," Proc. Conf. Computer-Human Interaction (CHI 96), ACM Press, 1996, pp. 300-307.

Index Terms:
screen magnifiers, visual impairment, user evaluation
Citation:
Paul Blenkhorn, Gareth Evans, Alasdair King, Sri Hastuti Kurniawan, Alistair Sutcliffe, "Screen Magnifiers: Evolution and Evaluation," IEEE Computer Graphics and Applications, vol. 23, no. 5, pp. 54-61, Sept.-Oct. 2003, doi:10.1109/MCG.2003.1231178
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