Automated Evaluation of Choroidal Thickness and Minimum Rim Width Thickness in Nonarteritic Anterior Ischemic Optic Neuropathy.

Background: The aim of this study was to evaluate and compare peripapillary choroidal thickness (pCT) and macular choroidal thickness (CT), Bruch membrane opening-minimum rim width (BMO-MRW), retinal nerve fiber layer (RNFL) thickness, and optic disc area among nonarteritic anterior ischemic optic neuropathy (NAION) eyes, the contralateral unaffected eyes, and healthy control eyes. Methods: Twenty-six patients diagnosed with NAION (29 affected and 21 unaffected eyes) and 29 healthy matched control individuals (29 eyes) were analyzed by swept-source optical coherence tomography. All participants underwent scanning by Spectralis optical coherence tomography to analyze BMO-MRW, RNFL thickness, and optic disc area. Results: Mean pCT in the NAION eyes, unaffected fellow eyes, and the control group was 130.5 +/- 72.1 [mu]m, 149.6 +/- 75.7 [mu]m, and 103.7 +/- 36.7 [mu]m, respectively (analysis of variance [ANOVA], P = 0.04). Mean macular CT in the NAION eyes, unaffected fellow eyes, and the control group was 226.1 +/- 79.8 [mu]m, 244.6 +/- 81.4 [mu]m, and 189.9 +/- 56.4 [mu]m, respectively (ANOVA, P = 0.03). Mean and all sectorial RNFL and BMO-MRW thickness values were significantly thinner in the NAION eyes vs the unaffected fellow and control eyes (P

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