The target population is healthy adults aged 18 to 35 years. This study is being conducted as part of a larger project examining the correlation of the binocular vision tests with symptoms of concussions; therefore, this population has been selected to match that target population of young adults with concussion symptoms to ensure applicability of findings to the patient population in the larger study. Participants who have conditions or are taking treatments that could affect the results of the binocular vision tests will be excluded.