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Outcomes included: complete resolution of SRF on OCT, best\u2010corrected visual acuity (BCVA) in Early Treatment of Diabetic Retinopathy Study (ETDRS) letters, retinal sensitivity on microperimetry and a visual function questionnaire (NEI\u2010VFQ25).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Twenty\u2010nine out of 37 patients who received half\u2010dose PDT and 15 out of 17 patients who received HSML could be evaluated at final visit. At final visit, 93% of the patients treated with half\u2010dose PDT had complete resolution of SRF, compared with 53% of HSML\u2010treated patients (p\u00a0=\u00a00.006). At final visit, the mean estimate increase in the PDT group compared with the HSML group was\u00a0+\u00a02.1 ETDRS letters, +0.15\u00a0dB for the retinal sensitivity and\u00a0+\u00a05.1 NEI\u2010VFQ25 points (p\u00a0=\u00a00.103, p\u00a0=\u00a00.784 and p\u00a0=\u00a00.071, respectively). The mean estimated central retinal thickness in the half\u2010dose PDT group was \u22127.0\u00a0\u00b5m compared with the HSML group (p\u00a0=\u00a00.566). The mean estimated subfoveal choroidal thickness in the half\u2010dose PDT group was \u221216.6\u00a0\u00b5m compared with the HSML group (p\u00a0=\u00a00.359).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>At 20\u00a0months after treatment, cCSC patients successfully treated with half\u2010dose PDT are less likely to have recurrences of SRF compared with those successfully treated with HSML. However, functional outcomes did not differ.<\/jats:p><\/jats:sec>","DOI":"10.1111\/aos.14775","type":"journal-article","created":{"date-parts":[[2021,2,11]],"date-time":"2021-02-11T04:17:31Z","timestamp":1613017051000},"page":"805-811","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":35,"title":["Long\u2010term follow\u2010up of chronic central serous chorioretinopathy after successful treatment with photodynamic therapy or micropulse laser"],"prefix":"10.1111","volume":"99","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9589-602X","authenticated-orcid":false,"given":"Thomas J.","family":"van Rijssen","sequence":"first","affiliation":[{"name":"Department of Ophthalmology Leiden University Medical Center Leiden The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6351-7942","authenticated-orcid":false,"given":"Elon H. 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