Determining the visual angle of objects in the visual field: an extended application of eye trackers.

Scovil, Carol Y; King, Emily C; Maki Ast, Brian E · IEEE Trans Biomed Eng · 2009

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Abstract

Many eye-tracker systems display the point of central gaze fixation on video images of the viewed environment. We describe here a method for determining the visual angles of objects located in the periphery. Such data are needed to study the potential contributions of peripheral vision during cognitive and motor tasks.

Medical subject headings