{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T06:34:05Z","timestamp":1791354845336,"version":"4.3.1"},"reference-count":33,"publisher":"Optica Publishing Group","issue":"11","license":[{"start":{"date-parts":[[2020,10,12]],"date-time":"2020-10-12T00:00:00Z","timestamp":1602460800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v1#VOR-OA"},{"start":{"date-parts":[[2020,10,12]],"date-time":"2020-10-12T00:00:00Z","timestamp":1602460800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"DOI":"10.13039\/100000053","name":"National Eye Institute","doi-asserted-by":"publisher","award":["P30 EY001792"],"award-info":[{"award-number":["P30 EY001792"]}],"id":[{"id":"10.13039\/100000053","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000053","name":"National Eye Institute","doi-asserted-by":"publisher","award":["R01 EY029673"],"award-info":[{"award-number":["R01 EY029673"]}],"id":[{"id":"10.13039\/100000053","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000053","name":"National Eye Institute","doi-asserted-by":"publisher","award":["R01 EY030101"],"award-info":[{"award-number":["R01 EY030101"]}],"id":[{"id":"10.13039\/100000053","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000053","name":"National Eye Institute","doi-asserted-by":"publisher","award":["R01 EY030842"],"award-info":[{"award-number":["R01 EY030842"]}],"id":[{"id":"10.13039\/100000053","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000053","name":"National Eye Institute","doi-asserted-by":"publisher","award":["R01EY023522"],"award-info":[{"award-number":["R01EY023522"]}],"id":[{"id":"10.13039\/100000053","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000053","name":"National Eye Institute","doi-asserted-by":"publisher","award":["R43 EY028786"],"award-info":[{"award-number":["R43 EY028786"]}],"id":[{"id":"10.13039\/100000053","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Biomed. Opt. Express"],"published-print":{"date-parts":[[2020,11,1]]},"abstract":"<jats:p>Multispectral imaging (MSI) of the retina and choroid has increasing\n\t\t\t\t\tinterest for better diagnosis and treatment evaluation of eye\n\t\t\t\t\tdiseases. However, currently available MSI systems have a limited\n\t\t\t\t\tfield of view (FOV) to evaluate the peripheral retina. This study is\n\t\t\t\t\tto validate trans-pars-planar illumination for a contact-mode\n\t\t\t\t\tultra-widefield MSI system. By freeing the available pupil for\n\t\t\t\t\tcollecting imaging light only, the trans-pars-planar illumination\n\t\t\t\t\tenables a portable, non-mydriatic fundus camera, with 200\u00b0 FOV\n\t\t\t\t\tin a single fundus image. The trans-pars-planar illumination,\n\t\t\t\t\tdelivering illumination light from one side of the eye, naturally\n\t\t\t\t\tenables oblique illumination ophthalmoscopy to enhance the contrast of\n\t\t\t\t\tfundus imaging. A broadband (104 nm) 565 nm light-emitting diode (LED)\n\t\t\t\t\tis used for validating color fundus imaging first. Four narrowband\n\t\t\t\t\t(17-60 nm) 530 nm, 625 nm, 780 nm, and 970 nm LEDs are tested for MSI.\n\t\t\t\t\tWith 530 nm illumination, the fundus image reveals retinal vasculature\n\t\t\t\t\tpredominantly. 625 nm and 780 nm illuminations enhance the visibility\n\t\t\t\t\tof choroidal vasculature. With further increased wavelength of 970 nm,\n\t\t\t\t\tthe fundus image is predominated by large veins in the choroid, with\n\t\t\t\t\tmultiple vortex ampullas observed simultaneously in a single fundus\n\t\t\t\t\timage.<\/jats:p>","DOI":"10.1364\/boe.406299","type":"journal-article","created":{"date-parts":[[2020,10,6]],"date-time":"2020-10-06T08:30:09Z","timestamp":1601973009000},"page":"6281","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":37,"title":["Portable ultra-widefield fundus camera for multispectral imaging of the retina and choroid"],"prefix":"10.1364","volume":"11","author":[{"given":"Devrim","family":"Toslak","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taeyoon","family":"Son","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Muhammet Kazim","family":"Erol","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4391-4860","authenticated-orcid":true,"given":"Hoonsup","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tae-Hoon","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R. 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