Factors associated with motor vehicle-related eye injuries presenting to the US emergency departments

Objectives To evaluate risk factors associated with eye injuries related to motor vehicle accidents (MVA) using a multicentre national database from the US emergency departments. Patients and methods A post hoc analysis from the Nationwide Emergency Department Sample database (2006–2013) was performed. Patients presenting to the emergency department (ED) with MVA-related trauma were included. We then evaluated patient- and centre-level risk factors associated with the presence of ocular trauma using a multivariable logistic regression model. Results A total of 2,745,152 patients from 2080 ED were identified for inclusion. Of these, 31,493 patients (1.14%) were associated with ocular trauma. The most common ocular injuries reported in our study were injury to ocular adnexa, orbital fractures, subconjunctival haemorrhage, foreign body on eye, and open wound of the eyeball. In univariate analysis, the other patient factors associated with ocular trauma included male gender, >1 chronic condition, admission during weekend, >1 bodily injury, higher injury severity score (ISS), presence of skull fractures and other bodily fractures, seizures, and initiation of mechanical ventilation after MVA. The hospital characteristics associated with highest incidence of ocular trauma included ED visit to a level I trauma centre and metropolitan teaching hospital. The independent factors associated with ocular trauma included younger age groups, male gender, weekend injury, presence of chronic conditions, >1 bodily injury, higher ISS, presence of skull fractures, ED admission to level-1 trauma centre, and ED admission to a teaching hospital. Conclusions This multicentre study establishes that both patient- and centre-level factors are associated with MVA-related eye injuries.