Introduction. Easy-to-Read (E2R) is intended to enhance digital accessibility by reducing cognitive load. However, evidence supporting its effectiveness, particularly in non-disabled adult populations, remains limited. To fill this gap, the present study examines whether E2R is associated with more efficient reading across the adult lifespan. Materials and Methods. A convenience sample of healthy Spanish adults (N = 49; M = 42.2; SD = 20.5) completed a within-subject reading task. Texts were presented in a Control (sans-serif font, justified alignment, and standard spacing) and an E2R format (sans-serif font, left-aligned text, increased spacing, and pictograms). Eye movements were recorded at 500 Hz. Measures included fixation count, fixation duration, saccade amplitude, and reading time. After reading, participants completed a comprehension test. Linear mixed-effects models were fitted, with age entered as a continuous predictor. Results. The E2R condition resulted in shorter fixation durations and larger saccade amplitudes. Fixation count showed a non-significant trend. A significant main effect of age was observed on total reading time, with older participants exhibiting longer reading times. However, main effects of age and condition × age interactions were non-significant across other measures. Finally, non-significant differences in comprehension were found between conditions. Discussion. These results show for the first time that E2R may not represent any benefit for native readers without any marked cognitive difficulty. This pattern highlights the need to revisit and empirically refine current E2R guidelines, particularly when applied beyond their original target populations.

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