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Ocular pathology (OP) following orbital fracture can vary vastly in complexity and severity. Extra-ocular motility (EOM) limitations are frequently present in orbital trauma cases, with patterns of duction limitations being symmetrical or asymmetrical. The aim of this study was to identify if there was any association between increased OP following orbital fracture cases based on the pattern of EOM deficits. This is a retrospective cohort study of patients with fractured orbits presenting with or without EOM limitations to a level 1 trauma center between August 2015 to January 2018. All pertinent elements of the ophthalmic examination were recorded. Outcome measures: Chi-square analyses assessed for association between symmetrical or asymmetrical EOM limitation and OP. Odds ratios were calculated with 95% confidence interval. 278 orbits with wall fractures were included in this study. A significant correlation between EOM limitation and increased OP following orbital trauma was found (p = 0.000081). Cases with symmetrical and asymmetrical EOM limitation were 7.9 (95%CI: 2.3–27.2) and 5.22 (95%CI: 1.9–13.9) times more likely to have OP than cases with no EOM limitation, respectively. With extraocular muscle entrapment excluded, cases with symmetrical limitations had a significantly higher incidence of OP than cases with asymmetrical limitations (p = 0.0161). OP is frequently observed in cases of orbital fracture. While any EOM limitations should prompt the clinicians to anticipate OP, intra-ocular injury may be more likely in cases of symmetrical EOM limitation. Future prospective studies are needed to further elucidate the relationship between EOM symmetricity and OP following orbital trauma.

Clinical correlations of extraocular motility limitation pattern in orbital fracture cases: a retrospective cohort study in a level 1 trauma centre