Abstract
<h3>Background/aims</h3> To determine whether the development of non-arteritic anterior ischaemic optic neuropathy (NAION) is increased among patients newly diagnosed with obstructive sleep apnoea (OSA) in a large general population. <h3>Methods</h3> A 12-year nationwide, population-based, retrospective cohort study including 1 025 340 beneficiaries in the 2002–2013 Korean National Health Insurance Service database was performed. We identified 919 patients newly diagnosed with OSA aged ≥40 years and matched 9190 non-OSA controls using estimated propensity scores in reference to age, sex, demographics, comorbidities and co-medications. We applied Kaplan-Meier curves and Cox proportional hazard models to determine the risk of developing NAION in the OSA group compared with the non-OSA group. <h3>Results</h3> The 10-year incidence probability of NAION was higher in the OSA group (0.92%; 95% CI 0.88 to 0.97) than the non-OSA group (0.42%; 95% CI 0.41 to 0.44, p=0.002, log-rank test). The OSA group was at increased risk of developing NAION compared with the non-OSA group (HR 3.80; 95% CI 1.46 to 9.90) after adjusting for demographics, comorbidities and co-medications. <h3>Conclusions</h3> Our results suggest that patients with newly diagnosed OSA have an increased risk of NAION, although the absolute risk of NAION is low.
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