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Using eye tracking to investigate graphical elements for fully sighted and low vision users.

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Abstract:
 
"Using eye tracking to investigate graphical elements for fully sighted and low vision users.", (2000)
Jacko, J.A., Barreto, A.B., Scott, I.U., Chu, J.Y.M, Bautsch, H.S., Marmet, G.J., and Rosa, R.H.

OBJECTIVE: The objective of this study was to capture the eye movement measures, represented by the search strategy employed while completing a continuous matching task, from a population of fully sighted users and users who have been diagnosed with Age-Related Macular Degeneration (AMD) to identify an optimal icon size within a graphical user interface (GUI).

CONCLUSIONS: The study revealed that differences in search strategies do exist between fully sighted and AMD computer users. More specifically, icon size has been shown to affect the efficiency of the human-computer interaction and should therefore be an integral component when designing the GUI for AMD users. These findings suggest that there is a cutoff point at which icon enlargement no longer renders the AMD participants significantly different from fully sighted users. At this point design recommendations can be made as to the optimal size of icons given a black or white background. Furthermore, this study also demonstrated that eye movement analysis can be used reliably for a group of low vision users to identify the point at which icon enlargement fails to further benefit low vision users in a GUI environment.