The study of eye movements in reading allowed researchers to map out the perceptual span (moving window paradigm), the nature of the extrafoveal information extracted during a fixation, for instance orthographic and phonological information (boundary paradigm) or the relative influence of attention versus visual acuity drop-off in the perceptual span (parafoveal magnification paradigm).
The study of eye movements during reading revealed the mapping of the perceptual span (moving window paradigm), the extraction of extrafoveal information, including orthographic and phonological details (boundary paradigm), and the comparison of attention's role versus visual acuity decline in the perceptual span (parafoveal magnification paradigm).