"Everything Looks Fine" — Two Cases That Show Why That Isn't Always the Whole Story

September 2026
​​​​​​​Dr. Eric Chow, OD

Two children. Two respected eye institutions. Two very different outcomes once someone looked a little deeper.

MIAMI — Some of the most important lessons in eye care don't come from textbooks. They come from the exam chair. Recently, Dr. Eric Chow of Miami Vision Therapy saw two young patients whose stories, taken together, say something every parent deserves to hear: a "clean" eye exam and a "fine" set of eyes don't always mean a child's visual system is working the way it should.

Both of these children had already been seen by doctors at reputable institutions in Miami, including Bascom Palmer Eye Institute. To be clear, that reputation is well earned. But as these two cases show, the question a doctor is trying to answer matters.  

“Everything looks fine when you only look where the problem isn’t." Dr. Chow says. "That's not a criticism of anyone's skill. It's a reminder that eyesight and eye health are only part of the picture."

(The two children below are real patients; their names and identifying details have been changed to protect their privacy.)

Case 1: Mateo, age 10 — the child who read at a first-grade level with "perfect" eyes

Mateo is a bright ten-year-old who was struggling badly with reading. He skipped words, missed words, and repeated words. Spelling was a battle, and he couldn't reliably catch his own mistakes in writing. He got headaches and eye strain when he read, and words at near would blur and clear, blur and clear, several times an hour. Distance vision? No problem — he could see the board just fine.

Here's the part that matters for other families: Mateo had already been evaluated by two respected pediatric ophthalmologists — including one at Bascom Palmer and one at a major Miami children's hospital. According to his father, the conclusion both times was essentially the same: mild astigmatism, glasses not needed, everything looks fine, no concerns.

And they were right — about what they were checking. Those exams assessed eyesight (how clearly the eyes see) and eye health (whether the eyes are physically healthy). On both counts, Mateo was fine. But that's where the evaluation stopped.

The main point: Eyesight and eye health are not the same thing as visual function — how well the two eyes team, track, and focus together to make reading effortless. A child can have 20/20 eyesight and perfectly healthy eyes and still have a visual system that's working overtime just to get through a page.

Who caught it — and why psychologists matter

Mateo didn't end up in Dr. Chow's chair because of an eye doctor. He got there because of his psychologist. After a psychoeducational evaluation, his psychologist recommended a functional vision assessment to rule out a tracking or eye-teaming problem contributing to his reading struggles.

"I can't overstate how important psychologists and learning specialists are for these kids," says Dr. Chow. "They're often the first professionals to say, 'The eyes tested fine, but something about how this child processes visual information isn't adding up — let's dig deeper.' That single referral can change a child's entire academic trajectory."

Mateo also carries a diagnosis of ADHD — and that's not a coincidence. There is a real, documented link between attention challenges and convergence insufficiency (a common eye-teaming disorder). In a landmark study from UC San Diego, children with convergence insufficiency were found to have about a three times higher rate of ADHD than the general population. When a child can't comfortably hold their eyes together on a line of text, sustaining attention on reading becomes exhausting — and that can look a lot like inattention.

What the deeper testing actually found

When Dr. Chow tested how Mateo's visual system functioned, a very different picture emerged.

• Tracking (eye movements): On the Developmental Eye Movement test — a standardized measure of how smoothly and efficiently the eyes jump from target to target the way they must when reading — Mateo showed a clear oculomotor (eye-movement) dysfunction. In plain terms, his eyes weren't moving across the page cleanly and automatically; they were laboring.
• Reading rate: Using objective eye-tracking during reading, Mateo read at 51 words per minute. The average for his grade is 158. His reading was landing at roughly a first-grade level — not because he isn't smart, but because his eyes were fighting him the entire time.
• Convergence — the sneaky part: This is where experience matters. On the surface, Mateo's ability to point his eyes inward (convergence) looked normal — he could bring his eyes almost to his nose. But he was faking it, so to speak, without realizing it: he was overusing his focusing system to drag his eyes into position. The moment Dr. Chow tested his eye teaming without letting him lean on that focusing crutch, the whole system fell apart. That's a hidden convergence insufficiency — the kind a quick look would miss entirely.
• Eye-teaming stamina: A test of vergence facility measures how quickly the eyes can converge, relax, and converge again — the rapid adjustments reading demands. A healthy score is around 15 cycles per minute. Mateo scored 0 at near (he simply couldn't do it) and 4 at distance.

Add it up and Mateo's diagnoses included accommodative insufficiency, a spasm of accommodation (a focusing system stuck in overdrive), convergence insufficiency, deficient tracking, and exophoria. None of it showed up on an eyesight-and-eye-health exam, because those systems were not being tested. All of it was quietly sabotaging his reading.

A PSA from Dr. Chow: "We have to do better as a profession. We have to know what to look for before we dismiss a struggling reader. Because everything looks fine if all you check is eyesight and eye health. These kids don't need to be told they're fine — they need someone to look in the right place."

Case 2: Lucas, age 9 — the same eyes, five different prescriptions

If Mateo's story is about what gets missed, Lucas's story is about how much judgment goes into a prescription — especially for farsightedness (hyperopia) in a young child.

"Hyperopia prescribing is one of those areas where if you take a child to five different eye care providers, you'll probably get five different prescriptions," Dr. Chow says. "What a doctor prescribes is shaped by their training, their experience, and their philosophy. There's real art and science to it."

Lucas is a nine-year-old who came in with reading discomfort and focusing complaints. He'd already been evaluated at a university clinic and prescribed reading glasses of +1.50 in the right eye and none in the left — but his mom never filled them, because the prescribing doctor wasn't fully confident in the numbers.

When Dr. Chow examined him, several encouraging things stood out:

• He had strong depth perception (Random Dot stereopsis). That's a big deal. To achieve it, both eyes have to be locked on and working together — which tells us his brain developed enough binocular wiring to protect against amblyopia ("lazy eye"). In other words, the highest-risk scenario was already off the table.
• He saw 20/20 in each eye, both far and near, without any glasses.
• His eye alignment was healthy and normal, with no eye turn (strabismus).
• His focusing did show one asymmetry: the right eye was lagging and working harder than the left.

Based on all of that — no eye turn, excellent depth perception, good acuity, and a right eye that needed a little support — Dr. Chow prescribed a modest, functional correction (roughly +1.00 in the right eye, +0.50 in the left) and started vision therapy to build up tracking, focusing, eye teaming, and visual-spatial skills.

Then Lucas's mom took him to Bascom Palmer for a second opinion. There, after a cycloplegic refraction (an exam done with dilating drops that temporarily freeze the eye's focusing muscles), he was prescribed +4.00 in the right eye and +2.75 in the left — dramatically more than Dr. Chow's numbers. Understandably, she came back confused.

The main point: Both approaches are legitimate — but they answer different questions. A cycloplegic exam reveals the maximum amount of farsightedness hiding in the eye once the focusing muscles are chemically relaxed. The question Dr. Chow asks is different: how is this child actually functioning in real life?

"At what point in that child's day is he walking around in a dilated, drops-induced state? Never," Dr. Chow explains. "My philosophy is to prescribe for function — how the child is actually seeing and reading up close, how accurately his eye muscles focus with their normal, everyday muscle tone. A +4.00 and +2.75 may be the maximum farsightedness under drops, but for this child, in my judgment, it's overkill."

His guiding rule for hyperopia is simple: as long as we're prescribing enough to keep a child safely out of the amblyopia "danger zone," we're doing right by them. And knowing whether you're in that zone requires the right tests — careful measures of depth perception, alignment, and amblyopia risk — not just a single number from one machine.

The takeaways for parents

1. "20/20 and healthy" is a starting line, not a finish line. A standard eye exam checks eyesight and eye health. It does not fully test how the eyes track, team, and focus together — the skills reading actually requires.
2. If your child is struggling to read despite "passing" the eye doctor, dig deeper. Skipping words, losing their place, headaches or blur with reading, fatigue, and avoidance of reading are classic signs of a functional vision problem — even when eyesight is perfect.
3. Attention and eye teaming are connected. Children with convergence insufficiency have roughly triple the rate of ADHD. If your child has an attention diagnosis, a functional vision evaluation is well worth it.
4. Psychologists and learning specialists are invaluable allies. They often catch what a routine eye exam wasn't designed to find. Mateo only got answers because of a psychologist's referral.
5. A prescription is a clinical judgment, not just a number. Especially with farsightedness in kids, thoughtful doctors can reasonably disagree. Ask why a prescription is what it is, and whether it's built around how your child actually functions day to day.

Great institutions and skilled doctors have their place — and Miami is lucky to have some of the best. But if your child's daily reality doesn't match a "everything's fine" report, trust that instinct. Sometimes the answer is simply that no one has looked in the right place yet.

Concerned about your child's reading, focus, or eye strain? Schedule a functional vision evaluation with Dr. Eric Chow, Dr. Adriana Benitez, and the team at Miami Vision Therapy. Book online at miamivt.com/request-an-appointment or call (786) 558-7295.

This article is for educational purposes and shares real patient cases with names and identifying details changed. It is not medical advice, and it is not a criticism of any individual provider or institution — different exams are designed to answer different clinical questions.