For Pediatricians & Therapists When to Refer for Functional Vision
Functional vision disorders convergence insufficiency, accommodative dysfunction, oculomotor deficits, and visual processing disorders are a frequently unexamined factor in pediatric patients presenting with reading difficulty, attention complaints, headaches associated with near work, and incomplete response to ADHD medication. These conditions are not detected by standard visual acuity screening and require specialized functional vision evaluation to identify.
The Neuro-Visual Performance Institute (NVPI), led by Dr. Rick Graebe, O.D., FCOVD, provides comprehensive functional vision evaluations and integrated Neuro-Visual Performance Training programs for these patients. With over 40 years of clinical experience and more than 9,000 patients treated, NVPI offers a clear, efficient referral pathway for clinicians who recognize that something more than acuity is affecting their patient's performance.
When Functional Vision Should Be on the Differential
These clinical presentations, organized by referring discipline, warrant consideration of a functional vision disorder. Standard acuity screening is typically normal in these cases. A child can have 20/20 sight and still have convergence insufficiency, accommodative dysfunction, or visual processing deficits that directly impair academic performance.
- Attention and concentration issues that occur mainly during reading or homework but not during physical activity or social interaction — this task-specific pattern suggests a visual demand trigger, not a global attention deficit
- ADHD diagnosis with persistent reading difficulty despite adequate behavioral response to stimulant medication
- Recurrent near-work headaches (reading, screens, homework) that don't fit a migraine pattern and resolve when the visual task stops
- Reading avoidance or slow fluency despite average or above-average cognitive ability
- Child "passed the eye exam" but academic or attention symptoms persist — standard acuity screening does not assess binocular vision, accommodation, oculomotor control, or visual processing
- Behavioral regression or increased frustration at the 3rd–4th grade transition, when demands shift from learning to read to reading to learn
- Low Beery VMI scores with no clear motor explanation — when visual-motor deficits are disproportionate to fine motor skill level, the visual input side should be evaluated independently
- Handwriting spacing, line adherence, and copying difficulties that don't resolve with motor-focused intervention alone
- Poor performance on visual perceptual assessments (TVPS-4) indicating deficits in discrimination, spatial relationships, visual memory, or form constancy
- Treatment plateau on visual-motor goals — underlying binocular vision dysfunction or accommodative insufficiency may be limiting progress
- Sensory profiles showing visual hypersensitivity or avoidance in visually complex environments, which may reflect inefficient visual processing rather than a primary sensory modulation disorder
- Reading comprehension deficits with adequate decoding — oculomotor or accommodative fatigue may be consuming cognitive resources needed for language processing
- Co-occurring visual and language processing weaknesses — visual deficits can compound language-based reading difficulties, and addressing both systems produces stronger outcomes
- Difficulty with visual aspects of literacy: sight word recognition, line tracking, left-to-right progression, and return sweep accuracy
- Loss of place, skipping lines, or re-reading lines during reading — commonly attributed to inattention but frequently indicating saccadic dysfunction or convergence insufficiency
Essential Visual Skills
for Teachers
How to Refer
Referring a patient to NVPI is straightforward. We welcome referrals for any pediatric patient whose clinical presentation includes signs consistent with functional vision dysfunction.
Versailles, KY
859-879-0089Somerset, KY
606-332-3327- NVPI serves patients nationally and internationally.
- No prior authorization required for private-pay evaluations.
- Insurance & Medicaid: Accepted plans vary; please contact us for billing info.
Three Video Stories That Show How Care Can Change Daily Life
PATIENT STORIES • READING • FOCUS • CONFIDENCE
Hear from families and patients who share real progress in reading, focus, eye alignment, and confidence through care at NVPI.
"It really helped me with focusing, and I had a lot of trouble reading before."
JP's Story
Eye Therapy Helped Me Focus & Read Better
"She's had dramatic improvement in her reading ability, and her eye doesn't turn in anymore."
Reading & Eye Alignment Story
Vision Therapy Corrected My Eye Turn and Helped My Reading
"My son jumped two full reading grade levels in 3 months."
Miles' Story
Jumping Two Grade Levels in 3 Months
"It really helped me with focusing, and I had a lot of trouble reading before."
JP's Story
Eye Therapy Helped Me Focus & Read Better
"She's had dramatic improvement in her reading ability, and her eye doesn't turn in anymore."
Her Story
Correcting an Eye Turn and Improving Reading
"My son jumped two full reading grade levels in 3 months."
Miles' Story
Jumping Two Grade Levels in 3 Months
Evaluation and Communication
NVPI conducts comprehensive functional vision evaluations that go well beyond standard acuity and ocular health assessments. Our evaluations are designed to identify the specific visual skill deficits contributing to a patient's clinical presentation and to communicate findings in terms that are directly useful to referring providers and treatment teams.
- Binocular vision and vergence function — convergence, divergence, near point of convergence, positive and negative fusional vergence ranges
- Accommodative system — amplitude, facility, accuracy, and sustained near focus under realistic task conditions
- Oculomotor skills — saccadic accuracy and efficiency, pursuit smoothness, and fixation stability, assessed via standardized instruments including the Developmental Eye Movement Test (DEM) and NSUCO Oculomotor Test
- Visual processing — TVPS-4 subtests covering visual discrimination, visual memory, spatial relationships, form constancy, sequential memory, figure-ground, and visual closure
- Visual-motor integration — Beery VMI with supplemental motor coordination and visual perception subtests to differentiate motor, perceptual, and integrative contributions
- Evaluation reports include detailed clinical findings, a clear description of functional impact on activities of daily living and academic performance, and specific treatment recommendations
- For shared patients, NVPI coordinates directly with referring providers and communicates progress at regular intervals throughout the Neuro-Visual Performance Training program
- For school-age patients, evaluation reports are formatted to support ARC and IEP teams with documentation appropriate for eligibility determination, accommodation planning, and service coordination
- Treatment plans specify session frequency, estimated duration, and measurable goals tied directly to the functional deficits identified in the evaluation
Our Valued Patients
Learn how our personalized vision care has made a lasting difference in the lives of those we’ve helped.
Provider Education Opportunities
NVPI is available for lunch-and-learn presentations at your practice, clinic, or hospital department. Our presentations are designed for referring clinicians and cover practical, evidence-based content you can apply in your own evaluations. Available topics include:
- Functional vision disorders in pediatric patients — what they look like in your exam room or treatment session, and how they differ from acuity-based problems
- The overlap between functional vision deficits and ADHD — differential indicators, co-occurrence rates, and co-management strategies
- When to suspect a visual processing disorder — clinical red flags for occupational therapists, speech-language pathologists, and educators
Contact NVPI to schedule a presentation for your team:
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