Convergence Insufficiency Identifies Athletes at Risk of Prolonged Recovery From Sport-Related Concussion

The American Journal of Sports Medicine
Kevin M DuPreyPeter F Cronholm

Abstract

Sensitive and specific screening methods are needed to identify athletes at risk of prolonged recovery after sport-related concussion (SRC). Convergence insufficiency (CI) is a common finding in concussed athletes. To assess the relationship between CI and recovery after SRC at the initial office visit. Case-control study; Level of evidence, 3. In this retrospective cohort study, 270 athletes (147 male, 123 female), mean ± SD age 14.7 ± 2.0 years (range, 10-21 years), with the diagnosis of SRC who presented for initial office visit between January 2014 and January 2016 were evaluated for near point of convergence (NPC). The athletes were categorized into 2 groups: normal near point of convergence (NPC ≤6 cm), and convergence insufficiency (NPC >6 cm). These athletes were then followed to determine recovery time. Athletes presented for initial office visit at a mean of 5.2 ± 4.2 days (range, 1-21 days) after SRC. Half of the athletes had CI after SRC (50.4%; n = 136). Athletes with CI (NPC 12.3 ± 4.7 cm) took significantly longer to recover after SRC, requiring 51.6 ± 53.9 days, compared with athletes with normal NPC (4.1 ± 1.3 cm), who required 19.2 ± 14.7 days ( P < .001). After controlling for potential confounding variables,...Continue Reading

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Software Mentioned

Stata
ImPACT
Sideline Concussion Assessment Tool 3
KD
ImPACT ( Balance Error Scoring System

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