Walk into almost any school support meeting in this country and mention that a child is struggling to read, and watch how quickly the conversation turns to phonics. Phonemic awareness screenings. Structured literacy programs. Orton-Gillingham interventions. These are valuable tools - for the right child. But a well-meaning, one-size-fits-all approach to reading difficulties has become so entrenched in educational systems that we are routinely missing a significant proportion of struggling readers whose problems have nothing to do with phonological processing whatsoever.

As behavioral optometrists, we see these children regularly. They arrive in our practices after months or years of reading intervention that hasn't moved the needle. They've been told they have dyslexia. Their parents have been told to be patient, to practice more, to read aloud every night. And yet no one has ever thoroughly examined how their visual system is functioning under the sustained demands of near work. No one has asked whether their eyes are working together. No one has checked whether their brain is processing the visual information that their eyes are sending.

The problem is not that schools care too much about reading. The problem is that reading is being treated as a single-pathway skill when, in reality, it is one of the most neurologically complex tasks we ask developing brains to perform, and it can break down at many different points.

Reading Is a Multi-System Act

Fluent reading requires the seamless integration of ocular motor control, binocular vision, visual processing, phonological skills, language comprehension, attention, working memory, and executive function. A breakdown at any one of these levels can produce what looks like a "reading problem" from the outside. But the interventions required at each level are categorically different.

Consider the range of what we actually encounter in clinical practice:

Oculomotor dysfunction: A child with poor saccadic control loses their place constantly, skips or repeats lines, and reads slowly despite intact phonological skills. They may use their finger compulsively just to stay on the line. Drilling phonics with this child does nothing to address the underlying tracking deficit.

Convergence insufficiency: One of the most underdiagnosed causes of reading difficulty, CI occurs when the eyes struggle to maintain comfortable binocular alignment at near distances. These children report words that blur, double, or appear to move on the page. They experience headaches, eye strain, and fatigue after just minutes of reading. They avoid near work not out of laziness but because reading is genuinely uncomfortable. A phonics program will not fix their eyes.

Visual processing deficits: Some children have adequate acuity and binocular alignment but struggle with magnocellular processing, visual sequencing, or figure-ground discrimination. They misread visually similar words, have difficulty tracking letter order, and are easily overwhelmed by dense text. These deficits can precede and contribute to phonological difficulties, they are not the same thing.

Rapid automatized naming (RAN) deficits: Children with slow RAN can often decode accurately but read laboriously and slowly. Their problem is one of automaticity and processing speed, not phonemic awareness. Research consistently shows RAN to be one of the most reliable universal predictors of reading fluency across all languages, and it represents a distinct pathway from phonological processing.

Language and comprehension weaknesses: Some children read every word aloud accurately and yet cannot tell you what the passage was about. Their decoding is intact; their oral language, vocabulary, and syntactic processing are not. This is a "poor comprehender" profile that requires language-based intervention, not a phonics program.

Attention and executive function: Children with ADHD frequently present with inconsistent reading performance, poor comprehension, and reduced fluency, not because they cannot decode but because working memory lapses and sustained attention deficits disrupt the integration of text. Their reading profile requires a very different kind of support.

The Cost of Misidentification

When schools apply a single diagnostic label to this entire spectrum of children, and a single intervention framework, the consequences are real and lasting. Children with undiagnosed convergence insufficiency spend years in phonics remediation while their visual system goes untreated. Research suggests CI could affect approximately 1 in 5 of school-age children, and yet routine vision screenings at school check acuity at distance, not binocular function at near. A child can pass a standard 20/20 screening and still have a clinically significant convergence problem.

Meanwhile, these children develop something arguably more damaging than the reading difficulty itself: a narrative about who they are. They are slow. They are behind. They don't like reading. They're not trying hard enough. The misattribution of a treatable visual or perceptual condition as a character deficit or a fixed learning disability can follow a child for their entire educational career.

What a More Complete Assessment Looks Like

Effective identification of reading difficulty requires a multi-domain approach. Before any intervention is recommended, children who are struggling should ideally receive a comprehensive evaluation that includes not just phonological and language testing but a thorough assessment of visual efficiency (including tracking, vergence, and accommodation), visual processing, processing speed, attention, and working memory. This often requires collaboration between educators, developmental optometrists, speech-language pathologists, neuropsychologists, and pediatricians.

The good news is that many of these conditions are highly treatable. Vision therapy for convergence insufficiency, for example, has strong evidence behind it, with the CITT (Convergence Insufficiency Treatment Trial) demonstrating significant improvements in both visual function and academic performance. Catching a treatable binocular vision problem at age seven rather than age twelve makes an enormous difference.

A Call for More Nuanced Practice

None of this is an argument against phonological awareness training or structured literacy. For children whose reading difficulties are genuinely rooted in phonological processing, those interventions are evidence-based and important. The argument is against the reflexive application of any single framework to a heterogeneous population.

A child who loses their place, reports words moving, and gets headaches after ten minutes of reading is telling us something specific. A child who decodes accurately but reads at a fraction of the expected rate is telling us something different. A child who reads fluently aloud but cannot explain what they just read is telling us something different still. Our job across every discipline involved in children's literacy, is to listen carefully to what each individual child's profile is actually saying, rather than fitting them into the framework we happen to have on hand.

Reading difficulties are not one thing. It is time our systems of identification and intervention reflected that reality.