The King-Devick Test is used worldwide as a proven indicator of eye movement function using Rapid Number Naming.

Since 2011, there have been over 140 peer-reviewed studies recently published in elite medical journals validating King-Devick technologies products as quick, objective measures of saccadic dysfunction indicating suboptimal brain function in: concussion, migraine, multiple sclerosis, Parkinson’s disease, hypoxia, extreme sleep deprivation, Alzheimer’s disease and other conditions as well as effective intervention solutions for reading disabilities and post traumatic brain injury recovery. King-Devick Test has FDA pre-amendment certification for the assessment of saccadic eye movements. K-D Balance is FDA 510(k) cleared as a balance assessment tool. Some off-label uses of devices described in the peer-reviewed scientific research below have not been cleared by FDA.

Featured Articles

The King-Devick test of rapid number naming for concussion detection: meta-analysis and systematic review of the literature

The King-Devick test was useful in management of concussion in amateur rugby union and rugby league in New Zealand

Assessment of the King-Devick (K-D) test for screening acute mTBI/concussion in warfighters

Parents Take-On Concussion: Advances in Sideline Research and Culture in Youth Sports

Rapid number naming in chronic concussion: eye movements in the King–Devick Test

Adding Vision to Concussion Testing: A Prospective Study of Sideline Testing in Youth and Collegiate Athletes

Comparison and Utility of King-Devick and ImPACT® Composite Scores in Adolescent Concussion Patients

Concussion in Ice Hockey: Current Gaps and Future Directions in an Objective Diagnosis

Visual Screening Test for Rapid Sideline Determination of Concussive and Sub-concussive Events

The King-Devick test (KDT) and visual contrast sensitivity test (VCS) in migraine: the effect of migraine attack on rapid eye movements and visual sensitivity

Capturing saccades in multiple sclerosis with a digitized test of rapid number naming

The King-Devick (K-D) Test of Rapid Eye Movements: A Bedside Correlate of Disability and Quality of Life in MS

Slower saccadic reading in Parkinson's disease

Slowing of Number Naming Speed by King-Devick Test in Parkinson's Disease

Early Detection of Hypoxia-Induced Cognitive Impairment Using the King-Devick Test

Residency Training: The King-Devick Test and sleep deprivation: Study in pre- and post-call neurology residents

Screening Utility of the King-Devick Test in Mild Cognitive Impairment and Alzheimer Disease Dementia

Longitudinal Performance on the King-Devick Test in Patients with REM Sleep Behavior Disorder +/- Mild Cognitive Impairment


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