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.