The design of this project is a pilot study, a type of feasibility study conducted in preparation for subsequent RCTs that will assess the effectiveness of office-based vergence/accommodative therapy with movement (OBVAM) for mTBI-related convergence insufficiency.
• Age 18 to 35 years inclusive
Medical diagnosis of mTBI or concussion > 1 month ago and no longer than 6 months ago
Convergence Insufficiency Symptom (CISS score) ≥ 21
Best-corrected VA of 20/25 or better in both eyes at distance & near
• No previous treatment for CI
No previous diagnosis of CI from an ophthalmologist or optometrist
No medications known to affect accommodation or vergence
Investigator & patient willing to forgo all other CI treatment other than that assigned by randomization