Disparity Driven Vergence in Mild Traumatic Brain Injury (mTBI)

Examining Disparity Driven Vergence as a Potential Diagnostic Test for Mild Traumatic Brain Injury (mTBI)

This study aims to determine the validity and safety of disparity driven vergence using a portable goggle system (I-PAS) using a pseudorandom ternary sequence of frequencies for testing.

Inclusion Criteria:

• Age 18 to 65
• Both females and males

Exclusion Criteria:

• Central processing disorder
• Impaired vision without corrective lenses (max 20/60 uncorrected)
• Moderate to severe hearing loss (>55 decibels (dB) pure tone audiometry (PTA), <50% word identification)
• Vestibular disorder except for patients recruited for subjects recruited with a history of mild traumatic brain injury to compare to normal participants
• History of ear surgery other than myringotomy with or without tube placement
• Pregnant women
• Prisoners
• Adults unable to consent