Right now you see sharply an area roughly the size of your thumbnail held at arm's length. The rest of your visual field is a blurry preview your brain "paints in" on the fly. And yet it's precisely that blurry zone - peripheral vision - that largely decides how fast you read and how much you take in at a glance. The best part: it can be trained, and Schulte tables train it almost directly.
Two systems in one eye
- Central vision is handled by the fovea - a tiny pit in the retina covering barely 2 degrees of the visual field. Only there is the image truly sharp, and only there do you recognize letters and digits.
- Peripheral vision is everything else. Acuity drops off steeply, but it detects motion, contrast, and rough shapes brilliantly - and fast.
The periphery is not for reading letters. It's for something more important: it tells you where it pays to point your gaze next. The center reads - the periphery plans the route.
How your eye actually reads
Your gaze doesn't glide along a line of text. It moves in jumps - saccades - and between them it pauses on fixations of about 200-250 milliseconds. Keith Rayner, who summarized decades of eye-movement research, described two things worth knowing:
- During a saccade itself you see practically nothing - the brain suppresses the image. Information comes in only during fixations.
- A reader's perceptual span is narrow and asymmetric: barely 3-4 characters to the left of the fixation point, about 14-15 to the right.
A skilled reader, then, doesn't have "faster eyes". They have a better peripheral preview: out of the corner of the eye they pre-recognize upcoming words, so they make fewer fixations and backtrack less often. To be honest: nothing in Rayner's research promises that training your periphery will "double your reading speed". It promises something more modest but real - a smoother gaze path and fewer wasted jumps.
UFOV, or how much you take in at a glance
Psychologists measure this with the useful field of view (UFOV) - the area from which you can extract information in a single glance, without moving your eyes or head. It shrinks with fatigue and age. The good news: it responds to training.
- In the large ACTIVE trial (Ball et al., 2002; over 2,800 older adults), the group training visual processing speed improved markedly, and the gains held up for years. Later analyses linked the training to fewer at-fault car collisions. The caveat: gains showed mainly in the trained skills, not in "the brain in general".
- Green and Bavelier (2003, Nature) showed that action video game players have a wider useful field of view and distribute visual attention more efficiently - and that non-gamers improved on the same measures after a dozen or so hours of training. Visual attention is plastic in healthy adults, too.
Where Schulte tables come in
A Schulte table is an almost lab-grade version of UFOV training: 25 scattered numbers, and the whole trick is to keep your gaze on the center of the board and fish out the next numbers with your periphery - instead of scanning the grid row by row. At first it's frustrating: your gaze "wants" to jump to every number. Over time you cover more of the board without moving your eyes, and your time drops not because you point faster, but because you search less.
One metric shows whether the training works: how long it takes to find numbers far from the center. The Focus Tables app (iOS and Android) measures exactly that - its statistics break reaction times down by a cell's distance from the center, so you see in black and white whether your periphery is starting to pull its weight.
Three exercises to start with
- The center technique. Lock your gaze on the middle cell and find the numbers 1 to 25 moving your eyes as little as possible. The first rounds will be slower than usual - a sign you're practicing a new skill, not the old one.
- Growing grids. Start with 3×3, where covering the whole board is easy, and only increase the size once the center technique stops falling apart: 4×4, 5×5, 6×6. In the app, career mode walks you through a similar progression; on paper, the generator is all you need.
- The central dot. Print a board with a marked point in the middle - the generator has exactly that option - and treat it as an anchor: after every number you find, your gaze returns to the dot. Ready-made PDF sets are waiting in the tables library.
Once the classic board gets stale, add stimuli that keep your periphery working: numbers reshuffling after every hit, color blending, board rotation, the Gorbov mode, or your own set built in the training creator - all in the app, 100% offline, with no accounts and no ads.
Measure, don't guess
Peripheral vision won't turn you into a speed reader overnight - and no honest person will promise that. But a few minutes of the center technique a day can noticeably widen what you take in at a glance within weeks. That pays off everywhere: in text, on screen, behind the wheel. Start with the 5×5 test and a comparison against the norms, write down your result - and let your periphery get to work.
Sources: Rayner, K. (1998). Eye Movements in Reading and Information Processing: 20 Years of Research. Psychological Bulletin, 124(3) · Ball, K. et al. (2002). Effects of Cognitive Training Interventions With Older Adults: The ACTIVE Randomized Controlled Trial. JAMA, 288(18) · Ball, K. et al. (2010). Cognitive Training Decreases Motor Vehicle Collision Involvement of Older Drivers. JAGS, 58(11) · Green, C.S., Bavelier, D. (2003). Action Video Game Modifies Visual Selective Attention. Nature, 423.