Overview
The specific aim of this project is to validate clinical tests to be used as outcome measures in studies of mTBI-related vision problems.
Description
Participants with (n=50) and without (n=100) a history of mTBI will be recruited. Investigators will study the use of a series of visual endurance tests (tests that require sustained visual responses over a period of time). In addition to developing expected values for these tests, investigators will also after qualitative data about discomfort levels during testing.
Eligibility
Inclusion Criteria:
- Diagnosis of mTBI within previous 1 to 6 months
- Distance visual acuity better than or equal to 20/25 in each eye
- Score \>21 on Convergence Insufficiency Symptom Survey
Exclusion Criteria:
- Diagnosis of moderate or severe TBI; \> 30-min loss of consciousness
- Not wearing required refractive error)
- Disease(s) known to affect oculomotor system (multiple sclerosis, Graves orbitopathy, myasthenia gravis, diabetes mellitus, or Parkinson disease)-Manifest strabismus or intraocular injury (evaluated at vision examination)
- Cognitive delays that may impact testing