Joseph F Clark, Pat Graman, James K Ellis, Robert E Mangine, Joseph T Rauch, Ben Bixenmann, Kimberly A Hasselfeld, Jon G Divine, Angelo Colosimo, Gregory Myer

An exploratory study of the potential effects of vision training on concussion incidence in football

publication date
February 2015
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Background: Vision training has become a component of sports enhancement training, however quantifiable and validated improvement in visual performance has not been clearly demonstrated. In addition, there is minimal literature related to the effects of vision training on sports performance and injury risk reduction. the purpose of the current investigation was to determine the effects of vision training on peripheral vision and concussion incidence.

Methods: Vision training was initiated among the University of Cincinnati football team at the beginning of the 2010 season and continued for four years (2010 to 2013). e sports vision enhancement was conducted during the two weeks of preseason camp. Typical vision training consisted of Dynavision D2 light board training, Nike strobe glasses, and tracking drills. Nike Strobe glasses and tracking drills were done with pairs of pitch and catch drills using footballs, and tennis balls with instructions to vary arc, speed and trajectory. For skilled players “high ball” drills were the focused, whereas for linemen, bounce passes and low pitch drills were stressed.  Reaction time data was recorded for each athlete during every Dynavision D2 training session.  We monitored the incidence of concussion during the four consecutive seasons of vision training, as well as the previous four consecutive seasons and compared incidence of concussions; (2006 to 2009-referent seasons vs. 2010 to 2013 vision training seasons).


Results: During the 2006 -2013 pre- and regular football seasons, there were 41 sustained concussion events reported. e overall concussion incidence rate for the entire cohort 5.1 cases per 100 player seasons. When the data were evaluated relative to vision trained versus referent untrained player seasons, a statistically signicant lower rate of concussion was noted in players season  in the vision training cohort (1.4 concussions per 100 player seasons) compared to players who did not receive the vision training (9.2 concussions per 100 game exposures; P <0.001). e decrease in injury frequency in competitive seasons with vision training was also associated with a concomitant decrease in missed play time

CONCLUSION: Future prospective studies are needed to determine a causal relationship of vision training and injury prevention. Further, from this retrospective analysis, it is not clear what vision training method or methods are most benecial to support concussion injury risk reduction. Future prospective randomized clinical trials are warranted to better assess the cause and eect of vision training and its potential to reduce concussion incidence in football players.


Vision therapy is well worth the response, time and effort. Our Son had a hard time focusing and writing neatly. After vision therapy Seth could complete a task in half the time if previously took. His abilities to focus improved greatly and so did his handwriting.

Also, he was better at listening. As a parent, we wanted learning to be fun for our Son, and vision therapy made this possible.

Amanda T.

Vision Therapy is well worth the expense, time and effort. Our son had a hard time focusing handwriting neatly. After vision therapy Seth could complete a task in half the time it previously took his abilities to focus and improved greatly and so did his handwriting.

Also, he was better at listening. As a parent you wanted learning to be fun for our son and vision therapy made this possible.

Alexa H.

Vision Therapy has given or son the tools he needs to be able to scan and read the written word more effectively and efficiently.

He love working with John and these working sessions give him the motivation to gladly work on his homework assignments.

It amazed us to see the difference in the tracking of his eyes and along a line of it's from the beginning to the end of the treatment.

Dr. McBryar , Kristen and John  are all marvelous and we would recommend them to anyone I only wish that we would have found them sooner!

Charlotte M.

Prior to coming to the institute for vision development my son complained of daily headaches. Therapy has eliminated his headaches completely. I love knowing my son is able to learn pain-free for the rest of his life because of the work that has been done over just a few weeks in this office. He he absolutely loved coming that didn't even feel like going to a doctor or therapy. We are grateful for the relief he was able to find by coming here.

Thank you!

Olivia C.

Seems much less frustrated with life

Reads non-stop and fast

Spelling abilities have been hugely improved

Seems much more confident

Thank You!!!

Kelly O.

When we first came to the practice, my son did not have huge issues, but lots of small ones- trouble with reading, sports (hitting the baseball consistently), coordination, etc- that were not easily detectable,but when put together presented issues. The staff here were all very professional and loving towards him. While I was concerned in the reading, my son was concerned with the athletic side. Seeing improvement night off the bat gave him confidence that i have nor seen in him and made him want to not only Come to therapy, but also made him want to work hard. He has surpassed his grade level and above in reading and hit his first home run this year! Thank you!!!

Alice M.
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