According to the CDC, if any of the following concussion symptoms are present, call 911 or take the athlete to the emergency room: one pupil larger than the other, drowsiness or inability to wake up, worsening headache, slurred speech, weakness, numbness, decreased coordination, repeated vomiting, seizures, convulsions, increased confusion or irritability, neck pain, or loss of consciousness ( Read more).Your entire office will be able to use your search subscription.King-Devick Test not intended for subjects younger than 5 years old ( Journal of Neuro-Ophthalmology, Adding Vision to Concussion Testing: A Prospective Study of Sideline Testing in Youth and Collegiate Athletes, 2015).Research has shown the King-Devick Test to be additive to other sideline concussion assessments such as balance and cognition ( Neurology Clinical Practice, Vision Testing is Additive to the Sideline Assessment of Sports-Related Concussion, 2014).King-Devick Test is for assessment purposes only and any suspicion or indication of concussion should be evaluated by a licensed professional.Some off-label uses of devices described in the peer-reviewed scientific research have not been cleared by FDA. K-D Balance is FDA 510(k) cleared as a balance assessment tool. *King-Devick Test has FDA pre-amendment certification for the assessment of saccadic eye movements. Any worsening of King-Devick Test from baseline indicated a five-times greater likelihood of concussion ( Concussion, The King-Devick test of rapid number naming for concussion detection: meta-analysis and systematic review of the literature, 2016).*

High Sensitivity & SpecificityĪ recent meta-analysis found King-Devick Test to be both sensitive (86%) and specific (90%) for the detection of concussion. Peer-reviewed research has shown that adding a vision-based performance measure to cognitive and balance testing enhances the detection capabilities of current sideline concussion assessment ( Journal of Neuro-Ophthalmology, Adding Vision to Concussion Testing: A Prospective Study of Sideline Testing in Youth and Collegiate Athletes 2015).* The K-D Test is a recommended component of the Mayo Clinic Sideline Concussion Protocol.

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