Skilled readers move their eyes selectively, yet unconsciously. The visual cues are of paramount importance. Readers might use their predictions to guide their visual inspection of the text. They might skip, skim, or pore over individual letters only as needed to confirm or correct their expectations as to its message. The eyes of the reader do not move smoothly across the letters, words, and phrases of a text while reading. Instead, they leapfrog through the text, alternately pausing on a word and jumping quickly to another.
— What We Know About Acquisition of Adult Literacy
by Helen Abadzi