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Here, we review the history of anatomical descriptions of so\u2010called luminal \u201cvalves\u201d of the NDA, including the numerous historical figures whose eponyms adorn the NDA. By 1908, multiple false \u201cvalves\u201d that are likely no more than mounds of mucosa along the NDA had been recorded. In the modern era, these have all been largely considered speculative in nature and function aside from the consistently described true valve of Hasner (plica lacrimalis). Back then, eight so\u2010called \u201cvalves\u201d were believed to be identifiable. These were the \u201cvalves\u201d of Foltz, Bochdalek, Rosenm\u00fcller, Huschke, Aubaret, B\u00e9raud or Krause, Taillefer, and Hasner or Cruveilhier or Bianchi. With the advent of detailed characterization through modern high\u2010resolution imaging techniques, such as digital subtraction dacryocystography (DS\u2010DCG), many of these valvular folds have come into question owing to their inconsistent identification. This historical review should be useful for greater understanding and accurate contextual interpretation of \u201cvalves\u201d encountered on DS\u2010DCG studies, and in clinical management and therapeutic planning of patients prior to undergoing luminal procedures on the NDA. Clin. Anat., 2018. \u00a9 2018 Wiley Periodicals, Inc.<\/jats:p>","DOI":"10.1002\/ca.23284","type":"journal-article","created":{"date-parts":[[2018,9,27]],"date-time":"2018-09-27T14:09:42Z","timestamp":1538057382000},"page":"41-45","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Eponymous \u201cvalves\u201d of the nasolacrimal drainage apparatus. I. A historical review"],"prefix":"10.1002","volume":"32","author":[{"given":"Vivek","family":"Yedavalli","sequence":"first","affiliation":[{"name":"Department of Radiology, Division of Neuroimaging and Neurointervention Stanford University School of Medicine  Stanford California"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Devsmita","family":"Das","sequence":"additional","affiliation":[{"name":"Department of Radiology, Division of Neuroimaging and Neurointervention Stanford University School of Medicine  Stanford California"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9694-1408","authenticated-orcid":false,"given":"Tarik F.","family":"Massoud","sequence":"additional","affiliation":[{"name":"Department of Radiology, Division of Neuroimaging and Neurointervention Stanford University School of Medicine  Stanford California"},{"name":"Department of Radiology, Section of Neuroradiology Addenbrooke's Hospital, University of Cambridge School of Clinical Medicine  Cambridge CB2 0QQ United Kingdom"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2018,11,8]]},"reference":[{"key":"e_1_2_6_2_1","first-page":"211","article-title":"The valves of the lacrymo\u2010nasal passages (les replis valvulaires des canalicules et du conduit lacrymo\u2010nasal)","volume":"28","author":"Aubaret E","year":"1908","journal-title":"Arch d'Ophthal"},{"volume-title":"Duane's Clinical Ophthalmology","year":"2006","author":"Bedrossian EH","key":"e_1_2_6_3_1"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00695061"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-0-387-35267-1_1"},{"key":"e_1_2_6_6_1","first-page":"17","volume-title":"Oculoplastic Surgery: The Essentials","author":"Chen WPD","year":"2001"},{"key":"e_1_2_6_7_1","unstructured":"FernandezFJA.2008. 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