https://aluminahealth.com/assets/concussion-eye-tests-0pxRyDbt.js

1const e={title:"Concussion Eye Tests: What Clinicians Check and What Home Tests Cannot Diagnose",metaTitle:"Concussion Eye Tests: Uses, Limits, and Warning Signs",description:"Learn what clinicians may examine after concussion, including pupils, eye movement, tracking, and visual symptoms—and why home tests cannot diagnose it.",slug:"concussion-eye-tests",category:"concussion",primaryKeyword:"concussion eye test",conditions:["concussion"],assessments:["eye-brain-vision-check","walking-and-movement"],assessmentLinks:[{anchor:"eye-brain vision check",slug:"eye-brain-vision-check"},{anchor:"walking and movement assessment",slug:"walking-and-movement"}],articleLinks:[{anchor:"concussion symptom tracking guide",slug:"how-to-track-concussion-symptoms-during-recovery"},{anchor:"visual motor test guide",slug:"visual-motor-test"},{anchor:"gait analysis guide",slug:"gait-analysis-at-home-balance-changes-to-track"}],pageLinks:[{anchor:"concussion condition page",path:"/conditions/concussion"}],datePublished:"2026-08-03",dateModified:"2026-08-03",launchPriority:32,readingTimeMin:9,keyTakeaways:["No pupil check, eye-tracking task, or other home eye test can confirm or exclude concussion.","Clinicians assess vision and eye movement as one part of a broader injury evaluation.","Device, baseline, fatigue, pain, practice, and screen conditions can change home performance.","Unequal pupils or worsening neurological signs after injury can require emergency care."],faqs:[{q:"Can an eye movement test confirm a concussion?",a:"No. Ocular and vestibular findings may contribute to a comprehensive clinical evaluation, but no single eye test independently confirms or excludes concussion."},{q:"Do pupils always change after a concussion?",a:"No. Pupils may appear normal. One pupil becoming larger than the other after an injury is a danger sign that requires emergency evaluation."},{q:"Can concussion affect eye tracking?",a:"It can be associated with changes or symptom provocation during pursuits, saccades, convergence, or vestibular-ocular tasks, but these findings are not specific to concussion."},{q:"Is it safe to test a child for concussion at home?",a:"A caregiver may observe symptoms, but should not rely on a home test for diagnosis or clearance. A suspected concussion in a child needs evaluation and activity guidance from a qualified professional."}],citations:[{label:"Symptoms of Mild TBI and Concussion",publisher:"Centers for Disease Control and Prevention",url:"https://www.cdc.gov/traumatic-brain-injury/signs-symptoms/index.html"},{label:"A Brief Vestibular/Ocular Motor Screening Assessment to Evaluate Concussions",publisher:"American Journal of Sports Medicine",url:"https://pubmed.ncbi.nlm.nih.gov/25106780/"},{label:"Oculomotor-Based Vision Assessment in Mild Traumatic Brain Injury: A Systematic Review",publisher:"Journal of Head Trauma Rehabilitation",url:"https://pubmed.ncbi.nlm.nih.gov/26291632/"}],body:[{type:"p",text:"No concussion eye test at home can rule a concussion in or out. Pupils, eye movements, visual symptoms, balance, cognition, injury history, and neurological findings are parts of a broader evaluation. A normal-looking pupil check or smooth tracking performance does not clear a person, while an unusual home result does not independently establish a brain injury. Suspected concussion requires qualified clinical assessment and activity guidance."},{type:"p",text:"Vision-related symptoms are common after mild traumatic brain injury, but they are not unique to concussion. Migraine, eye conditions, vestibular disorders, fatigue, medication, anxiety, neck injury, and other neurological problems can affect similar tasks. Clinical interpretation considers the complete picture and the person's baseline."},{type:"callout",variant:"warning",text:"After a head or body impact, call emergency services for one pupil larger than the other, worsening headache, repeated vomiting, seizure, weakness or numbness, decreased coordination, slurred speech, unusual behavior, increasing confusion, loss of consciousness, marked drowsiness, or inability to wake the person."},{type:"h2",id:"why-concussion-can-affect-vision-and-eye-movement",text:"Why concussion can affect vision and eye movement"},{type:"p",text:"Seeing clearly during movement requires coordination among the eyes, brain, inner-ear balance system, neck, and attention networks. Concussion can be associated with blurred or double vision, light sensitivity, reading difficulty, eye strain, dizziness, motion sensitivity, or trouble keeping a target clear. Symptoms may appear immediately or emerge with activity."},{type:"p",text:"Eye movements include smooth pursuits that follow a moving target, saccades that shift quickly between targets, convergence that brings the eyes inward for near work, and the vestibular-ocular reflex that stabilizes vision during head movement. A visual motor test guide explains how vision and movement interact without presenting a diagnostic protocol."},{type:"p",text:"Symptoms can also reflect pain, poor sleep, medication effects, preexisting vision needs, or an eye problem. A clinician may involve an eye-care, vestibular, rehabilitation, sports medicine, or neurological professional depending on the presentation."},{type:"h2",id:"what-clinicians-may-check",text:"What clinicians may check"},{type:"p",text:"The examination is selected for the individual. It may include pupil size and response, visual acuity, visual fields, eye alignment, smooth pursuit, saccades, near-point convergence, accommodation, vestibular-ocular function, balance, gait, strength, sensation, cognition, and symptom response. Not every person needs every task."},{type:"table",caption:"Eye-related checks in a broader concussion evaluation",headers:["Area","What a clinician may observe","Why one finding is not diagnostic"],rows:[["Pupils","Size, symmetry, and response in context","Normal pupils do not exclude concussion; asymmetry can have several causes"],["Smooth pursuit","Ability to follow a moving target and symptom response","Fatigue, attention, vision, and other disorders can affect performance"],["Saccades","Rapid shifts between targets","Accuracy or discomfort is not specific to concussion"],["Convergence","Near viewing and double-vision symptoms","Baseline differences and eye conditions matter"],["Vestibular-ocular tasks","Gaze stability and motion-provoked symptoms","Requires safe administration and clinical context"],["Acuity and fields","Clarity and areas of vision","Abnormalities may indicate an eye or neurological problem needing separate evaluation"]]},{type:"p",text:"Vestibular/Ocular Motor Screening is one clinical tool that samples pursuits, saccades, convergence, vestibular-ocular reflex, and visual motion sensitivity. Research supports its use as one component of assessment, not a standalone diagnosis or return-to-play decision."},{type:"h2",id:"why-pupil-checks-at-home-are-limited",text:"Why pupil checks at home are limited"},{type:"p",text:"People often search for a flashlight pupil test. Pupil appearance alone cannot diagnose concussion. Lighting, camera exposure, medicines, prior eye conditions, and normal individual differences can affect appearance. Repeatedly shining a bright light can worsen discomfort and may create false reassurance or alarm."},{type:"p",text:"Observe rather than conduct a diagnostic experiment. If one pupil is newly larger after an injury, vision changes suddenly, the eyelid droops, the person becomes confused or hard to wake, or another CDC danger sign appears, seek emergency care. Do not wait to see whether a pupil returns to normal."},{type:"p",text:"A normal pupil response does not clear someone to sleep unsupervised, drive, work, attend school, or return to 

1sport. Follow the instructions provided by the evaluating clinician."},{type:"h2",id:"eye-tracking-and-online-test-limitations",text:"Eye tracking and online test limitations"},{type:"p",text:"Eye tracking can refer to watching the eyes directly, asking someone to follow a target, or using a camera or sensor to measure gaze. Research tools may detect group differences after concussion, but consumer conditions are less controlled. Device camera quality, calibration, screen size, glasses, contact lenses, lighting, head movement, fatigue, nausea, attention, and practice affect results."},{type:"p",text:"Baseline matters. A side-to-side difference or slower session may have existed before injury. Repeating a task can improve performance through familiarity even while symptoms remain. Conversely, a poor session after sleep loss or screen exposure does not prove worsening injury."},{type:"p",text:"An eye-brain vision check can preserve a personal observation when a treating clinician considers it appropriate. It cannot diagnose concussion, determine recovery, or clear an activity. Stop if symptoms increase meaningfully or the care plan says to avoid screen tasks."},{type:"h2",id:"visual-symptoms-worth-tracking",text:"Visual symptoms worth tracking"},{type:"p",text:"Record blurred or double vision, light sensitivity, difficulty reading, eye strain, headache, dizziness, motion sensitivity, trouble focusing near or far, and the activity that brought symptoms on. Note the level before activity, highest level during or after, and time required to settle. Do not deliberately provoke severe symptoms to find a threshold."},{type:"p",text:"The concussion symptom tracking guide provides a sustainable whole-person record across physical, cognitive, sleep, and emotional domains. The concussion condition page reinforces that tracking does not provide diagnosis or return-to-activity clearance."},{type:"p",text:"Include glasses or contacts, screen brightness, task duration, sleep, medication timing, and whether symptoms were present before the injury. A short description such as “double vision began after ten minutes of reading and resolved after a break” is more useful than “failed eye test.”"},{type:"h2",id:"emergency-warning-signs-and-clinical-follow-up",text:"Emergency warning signs and clinical follow-up"},{type:"p",text:"Emergency danger signs include worsening headache, repeated vomiting, seizure, weakness or numbness, decreased coordination, slurred speech, unusual behavior, increasing confusion, one pupil larger than the other, loss of consciousness, or inability to wake. Children may also show inconsolable crying or refusal to eat after injury. Follow local emergency guidance."},{type:"p",text:"Arrange clinical follow-up for persistent or worsening visual symptoms, difficulty returning to normal activity, or symptoms that conflict with the recovery plan. Return to driving, work, school, and sport requires individualized guidance. A good home score is not clearance."},{type:"h2",id:"how-visual-tracking-may-support-recovery-discussions",text:"How visual tracking may support recovery discussions"},{type:"p",text:"When approved by the treating clinician, consistent visual or walking observations may add between-visit context. Keep the device, vision correction, lighting, task, and general time similar. A walking and movement assessment may document personal mobility, while a gait analysis guide explains broader limitations and safety."},{type:"p",text:"Summarize trends rather than interpreting them. Report what changed, what activity provoked symptoms, and how recovery time evolved. Alumina Health does not diagnose concussion, replace supervised examination, provide emergency care, or make return-to-activity decisions."}]};export{e as article};