Parafoveal Magnification

@article{Miellet2009ParafovealM,
  title={Parafoveal Magnification},
  author={Sebastien Miellet and Patrick J. O'Donnell and Sara C. Sereno},
  journal={Psychological Science},
  year={2009},
  volume={20},
  pages={721 - 728}
}
Models of eye guidance in reading rely on the concept of the perceptual span—the amount of information perceived during a single eye fixation, which is considered to be a consequence of visual and attentional constraints. To directly investigate attentional mechanisms underlying the perceptual span, we implemented a new reading paradigm—parafoveal magnification (PM)—that compensates for how visual acuity drops off as a function of retinal eccentricity. On each fixation and in real time… 

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