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OCT scans at 1300 nm and higher\u2010resolution OCM scans at 785 nm reveal the lymphatic vessels via their optical transparency. Equivalent signal characteristics are also observed from blood vessels largely free of blood (and devoid of flow) in the ex vivo conjunctiva. In our lymphangiography, vessel networks were segmented by compensating the depth attenuation in the volumetric OCT\/OCM signal, projecting the minimum intensity in two dimensions and thresholding to generate a three\u2010dimensional vessel volume. Vessel segmentation from multiple locations of a range of porcine eyes (<jats:italic>n<\/jats:italic> = 21) enables visualization of the vessel networks and indicates the varying spatial distribution of patent lymphatics. Such visualization provides a new tool to investigate conjunctival vessels in tissue ex vivo without need for histological tissue processing and a valuable reference on vessel morphology for the in vivo label\u2010free imaging studies of lymphatics to follow.<\/jats:p><jats:p><jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/jbio201800070-gra-0001.png\" xlink:title=\"image\"\/><\/jats:p>","DOI":"10.1002\/jbio.201800070","type":"journal-article","created":{"date-parts":[[2018,6,19]],"date-time":"2018-06-19T16:35:33Z","timestamp":1529426133000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Label\u2010free volumetric imaging of conjunctival collecting lymphatics ex vivo by optical coherence tomography 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