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Swept\u2010source optical coherence tomography angiography (SS\u2010OCTA) was performed before and immediately after watching to acquire choroidal thickness (ChT), three\u2010dimensional choroidal vascularity index (CVI) of large\u2010 and middle\u2010sized choroidal vessels and choriocapillaris flow voids (FV%) at macular and peripapillary area. Near point of accommodation (NPA) and accommodative facility (AF) were examined to evaluate the accommodative ability. Pupil diameters by infrared\u2010automated pupillometer under scotopic, mesopic and photopic condition were also obtained.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Compared with pre\u2010visual task, the subfoveal CVI decreased from 0.406\u2009\u00b1\u20090.097 to 0.360\u2009\u00b1\u20090.102 after 2D watching (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001) and to 0.368\u2009\u00b1\u20090.102 after 3D watching (<jats:italic>p<\/jats:italic>\u2009=\u20090.002). Pupil sizes under different illuminance conditions became smaller after both 2D and 3D watching (all <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001). AF increased after both 2D and 3D watching (both <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05). NPA receded in post\u20103D watching (<jats:italic>p<\/jats:italic>\u2009=\u20090.017) while a not significant tendency was observed in post\u20102D.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>A reduction in subfoveal choroidal blood flow accompanied with pupil constriction was observed immediately after 1\u2009h visual task using AR glasses in 2D and 3D mode. Accommodative facility improved after 2D and 3D watching with AR glasses, whereas decrease in the maximum accommodation power was only found in 3D mode.<\/jats:p><\/jats:sec>","DOI":"10.1111\/aos.15671","type":"journal-article","created":{"date-parts":[[2023,4,24]],"date-time":"2023-04-24T05:41:24Z","timestamp":1682314884000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Change in three\u2010dimensional choroidal vessel network after <scp>AR<\/scp> device assisted 1\u2010hour visual task in <scp>2D<\/scp>\/<scp>3D<\/scp> mode in young healthy subjects"],"prefix":"10.1111","volume":"102","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6221-0706","authenticated-orcid":false,"given":"Yuying","family":"Liu","sequence":"first","affiliation":[{"name":"Department of Ophthalmology, Shanghai General Hospital Shanghai Jiao Tong University School of Medicine  Shanghai China"},{"name":"National Clinical Research Center 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