Vertical Heterophoria and Vestibular Symptoms in Military Personnel with Chronic mTBI

In this population of military personnel with a history of chronic mTBI, both persistent vestibular complaints and vertical heterophoria were prevalent. The study showed that elevated vertical vergence imbalance between the two eyes was significantly correlated with more vestibular symptoms in patients with chronic mTBI. Vertical heterophoria may be a useful clinical technique; however, effectiveness of vertical heterophoria correction for the management of symptomatic mTBI requires further investigation.