What is King-Devick Test?

What is King Devick test?

What is King-Devick test?


King-Devick Test (commonly referred to as the KD test) is a number naming assessment, created by King-Devick Technologies, that measures eye movements, attention, and language in order to identify deficits.

There is little clinical evidence to support claims of accurate and reliable identification for the specific indication of concussion across a broad age range.

Is King-Devick FDA cleared?

King-Devick Test is not FDA cleared for assessing concussions. Here’s a list of FDA products cleared for assessing head injuries.


Before making any decisions, read through the Buyer’s Guide for 8 questions you should be asking before choosing a concussion assessment tool.

Pros of King-Devick Test:

  • Quick administration
  • Integrated vision and balance measures (as separate products)

Cons of King-Devick Test:

When choosing a concussion care solution, be aware that your choice of a vendor may place you at a significant risk if you chose a product that is not cleared by the FDA and as such operating outside of the FDA safety guidance. Here is the list of FDA cleared products for assessing a head injury.