Concussion History Does Not Predict Pupillary Light Reflex or Visual Sensory Performance in Young Adults

• DOI: 10.1249/01.mss.0000560801.23086.0a
• Publication Date: 2019-06-25T19:51:10Z
• Authors: Cassie B. Ford; Christina B. Vand...; Nikki Barczak; Patricia R. Combs; Jamie DeCicco; Lillian Vandermark; Kou Yang; Erik A. Wikstrom; Jason P. Mihalik
• Keywords: Pupillary light reflex; Pupillometry; Pupillary response; Pupillary reflex

Visual sensory performance (VSP) tasks may dynamically assess deficits following concussion, as these reflect visual and cognitive function motor response. The pupillary light reflex (PLR) represents autonomic nervous system activity, is inexpensive noninvasive to assess. This activity be compromised concussion; however, in young adults are currently unknown. relationships among PLR VSP outcomes interesting given metrics different but overlapping domains. PURPOSE: To investigate the effects of concussion history on between adults. METHODS: Participants [n = 89, age 21.0 ± 1.5 years, 19 (21.3%)] completed a test battery including VSP. Seven parameters included initial final pupil diameters, constriction dilation velocities, latency, time 75% diameter recovery (T75), average maximum velocity. clarity, contrast sensitivity, depth perception, near-far quickness, perception span, multiple object tracking, reaction time, target capture, eye-hand coordination, go/no-go. Regression models tested controlling for age; whether moderated outcomes. RESULTS: did not differ by (P > 0.05). We found negative relationship T75 (r88 -0.30, p 0.005) which was (t -0.97, 0.33), indicating that people with faster times also had times. No other significant were observed 0.01). CONCLUSION: Our measures history. These insensitive long-term physiological behavioral due prior injury, or no such exist It worth further studying inverse recovery, providing possible link an involuntary process supporting vision visual-sensory task performance.