What is an eye tracking disorder?
Reading requires two distinct types of eye movement: saccades — rapid jumps from one word to the next — and pursuits — smooth movements that follow a moving object. Both must be precise, well-coordinated between the two eyes, and sustainable over the length of a reading session.
In eye tracking disorder, saccades are over- or under-shooting their targets, pursuits are jerky rather than smooth, or both systems fatigue quickly. The result: the child's eyes land in the wrong place on the page, losing the word they were aimed at. The brain compensates by using the finger as a guide, re-reading lines, or — when compensation fails — simply avoiding reading altogether.
Signs and symptoms
- Frequently loses place while reading — skips words or whole lines
- Uses a finger or pencil to track text
- Re-reads the same line multiple times without realising it
- Moves head rather than eyes when reading across a line
- Inconsistent copying from board — slow, with frequent errors
- Reads slowly relative to phonics and comprehension ability
- Difficulty following a ball in sports (pursuit deficits)
Vision therapy for eye tracking
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1Oculomotor evaluationStandardized tests — including NSUCO oculomotor testing and DEM (Developmental Eye Movement) — objectively measure saccadic accuracy, pursuit quality, and fixation stability.
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2Saccadic trainingHart Chart drills, Saccadic Fixator activities, and computer-based saccade programs train the eyes to jump accurately and efficiently between targets of increasing complexity.
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3Pursuit trainingMarsden ball, rotator, and computer pursuit tasks progressively develop smooth, accurate following movements needed for reading and sports performance.
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4Integration with readingVisual-motor gains are transferred to actual text through speed-reading activities, paragraph tracking, and timed oral reading, ensuring the skill generalises to the classroom.
Frequently asked questions
Is eye tracking disorder the same as dyslexia?
No — but they share many surface symptoms, and children with oculomotor dysfunction are often misidentified as dyslexic. True dyslexia is a phonological processing disorder. Eye tracking disorder is a visual-motor problem that can make reading equally difficult but responds to vision therapy rather than reading instruction alone. A binocular vision evaluation can differentiate them.
What does 'poor tracking' look like in a classroom?
A child with tracking problems may frequently lose their place while reading, use a finger to track across the page, skip words or whole lines, read slowly despite phonics knowledge, struggle to copy from the board accurately, and have inconsistent performance across subjects depending on how much near reading is required.
Can tracking problems be improved with practice?
Yes — with targeted, supervised practice. Generic reading exercises do not directly train the oculomotor system. Vision therapy uses specific saccadic and pursuit training activities that progressively challenge and improve the precision and speed of eye movements.
Related conditions
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