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To find out the choroidal characteristics of each disease groups, various groups of AMD and PSD were classified into several clusters according to choroidal profiles based on subfoveal choroidal thickness (CT), peripapillary CT, the ratio of subfoveal CT to peripapillary CT and age. We retrospectively analyzed 661 eyes, including 190 normal controls and 471 with AMD or PSDs. In the AMD groups, eyes with soft drusen or reticular pseudodrusen were belonged to the same cluster as those with classic exudative AMD (all <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001). However, eyes with pachydrusen were not clustered with eyes from other AMD groups; instead, they were classified in the same cluster as eyes from the PSD group (all <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001). In the PSD group, eyes with pachychoroid neovasculopathy were grouped in the same cluster of those with polypoidal choroidal vasculopathy (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001). The cluster analysis based on the CT profiles, including subfoveal CT, peripapillary CT, and their ratio, revealed a clustering pattern of eyes with AMD and PSDs. These findings support the suggestion that pachydrusen has the common pathogenesis as PSD.<\/jats:p>","DOI":"10.1038\/s41598-021-84650-7","type":"journal-article","created":{"date-parts":[[2021,3,2]],"date-time":"2021-03-02T11:04:56Z","timestamp":1614683096000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Clustering of eyes with age-related macular degeneration or pachychoroid spectrum diseases based on choroidal thickness profile"],"prefix":"10.1038","volume":"11","author":[{"given":"Young Ho","family":"Kim","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Boram","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Edward","family":"Kang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jaeryung","family":"Oh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,3,2]]},"reference":[{"key":"84650_CR1","doi-asserted-by":"publisher","first-page":"68","DOI":"10.1016\/j.preteyeres.2013.07.003","volume":"37","author":"D Ardeljan","year":"2013","unstructured":"Ardeljan, D. & Chan, C. 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