Objective To examine interrelationships between various Vestibular/Ocular-Motor Screen (VOMS) items, to quantify recovery in VOMS performance in a sample of post-concussion adolescents receiving vestibular rehabilitation (VR), and to compare performance at discharge from VR to the performance and the proportion of false positives observed in healthy adolescents.

Design Case-control design.

Setting A tertiary interdisciplinary sport concussion clinic and a high school.

Participants Seventy-seven patients with concussion and seventy-seven healthy participants completed the study

Interventions For patients with concussion, a vestibular rehabilitation program was implemented to address dizziness and impairments in gaze stability, ocular alignment and control, accommodative function, and visual motion sensitivity. Healthy control participants did not receive any intervention.

Outcome Measures VOMS scores obtained at the initial VR visit, and change in VOMS scores over the course of VR program. VOMS scores were obtained once in healthy control participants.

Main Results With the exception of NPC distance, all VOMS items were inter-related (r_s=0.42–0.79, p<0.001). Over the course of VR, significant improvements in VOMS performance were observed in all VOMS subsets (Z= -5.0 to -6.1 (ps< 0.001). At discharge from VR, no differences were observed in the proportion of patients with positive findings compared to healthy controls (c² ₁=0.28, p=0.5) indicating full recovery.

Conclusions The VOMS test measures moderately related functions and it capture changes over the course of VPT. Adolescents completing a course of vestibular rehabilitation after concussion demonstrated significant improvements in all VOMS subsets. Clinicians should consider contextual risk of ‘false positive’ in their interpretation of VOMS for patients after SRC.