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.

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


Click on the links below to view additional peer-reviewed research related to: