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The surgery could be completed in 42 out of 65 eyes (65%) intended for CT, and 39 of them were included in the study. A follow\u2010up examination was performed in 2017. Success was defined as intraocular pressure\u2009\u2264\u200916\u2009mmHg without (complete) or with (qualified) glaucoma medication.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Complete success was obtained in 33\/39 eyes (85%), qualified success in 34\/39 eyes (87%). Of the 39 eyes with CT, 4 eyes (10%) needed additional surgery. Median follow\u2010up time was 120\u2009months (range, 19\u2013245\u2009months). Median pre\u2010 and postoperative IOP were 26.0\u2009mmHg (range, 10\u201341\u2009mmHg) and 11.0\u2009mmHg (range, 8\u201319\u2009mmHg), respectively (p\u2009&lt;\u20090.001). Cup\u2010disc ratio was \u22650.5 in 82% at baseline, at follow\u2010up in 9%. The median distance corrected visual acuity at follow\u2010up was logMAR 0.06 (range, \u22120.2 to 1.1). Median number of glaucoma medication at follow\u2010up was 0 (range, 0\u20132), at baseline 1.0 (range, 0\u20132). No serious complications were noted.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Circumferential trabeculotomy is an efficacious, safe and medication saving surgical treatment for PCG in the long term. After a median follow\u2010up of 10\u2009years (120\u2009months), the morphological status of the optic nerve was either normalized or stabilized, and the visual acuity overall well preserved.<\/jats:p><\/jats:sec>","DOI":"10.1111\/aos.14846","type":"journal-article","created":{"date-parts":[[2021,3,20]],"date-time":"2021-03-20T06:08:00Z","timestamp":1616220480000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Circumferential (360\u00b0) trabeculotomy in primary congenital glaucoma: 19\u2013245\u2009months of follow\u2010up"],"prefix":"10.1111","volume":"99","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8971-0820","authenticated-orcid":false,"given":"Turid Skei","family":"T\u00f8nset","sequence":"first","affiliation":[{"name":"Department of Ophthalmology Oslo University Hospital Oslo Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jan Erik","family":"Jakobsen","sequence":"additional","affiliation":[{"name":"Asker and Baerum Eye Clinic Asker Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jon Henrik","family":"Tveit","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology Oslo University Hospital Oslo Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna\u2010Katharina L.","family":"J\u00f8rstad","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology Oslo University Hospital Oslo Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tone Beate","family":"Brevik","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology Oslo University Hospital Oslo Norway"},{"name":"University of South\u2010East Norway (USN) Kongsberg Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lotte\u2010Guri Bogfjellmo","family":"Sten","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology Oslo University Hospital Oslo Norway"},{"name":"University of South\u2010East Norway (USN) Kongsberg Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liv","family":"Drolsum","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology Oslo University Hospital Oslo Norway"},{"name":"Institute of Clinical Medicine University of Oslo Oslo Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,3,19]]},"reference":[{"key":"e_1_2_5_2_1","doi-asserted-by":"publisher","DOI":"10.1136\/bjo.2004.047761"},{"key":"e_1_2_5_3_1","volume-title":"Dysgenesis Mesodermalis of the Iris and the Cornea: a study of Rieger's syndromeand Peters' Anomaly","author":"Alkemade PPH","year":"1969"},{"key":"e_1_2_5_4_1","first-page":"458","article-title":"The development of the trabecular meshwork and its abnormality in primary infantile glaucoma","volume":"79","author":"Anderson DR","year":"1981","journal-title":"Trans Am Ophthalmol Soc"},{"key":"e_1_2_5_5_1","first-page":"815","article-title":"Axial length development in children","volume":"12","author":"Bach A","year":"2019","journal-title":"Int J Ophthalmol"},{"key":"e_1_2_5_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sjopt.2019.10.002"},{"key":"e_1_2_5_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9394(42)91581-2"},{"key":"e_1_2_5_8_1","doi-asserted-by":"publisher","DOI":"10.1001\/archopht.1995.01100090126034"},{"key":"e_1_2_5_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9394(60)91007-2"},{"key":"e_1_2_5_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ophtha.2014.05.010"},{"key":"e_1_2_5_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/0039-6257(83)90174-1"},{"key":"e_1_2_5_12_1","doi-asserted-by":"publisher","DOI":"10.1136\/bjo.83.3.317"},{"key":"e_1_2_5_13_1","doi-asserted-by":"publisher","DOI":"10.1111\/aos.13414"},{"key":"e_1_2_5_14_1","doi-asserted-by":"publisher","DOI":"10.1159\/000309028"},{"key":"e_1_2_5_15_1","first-page":"76","article-title":"Epidemiology and genetics of primary congenital glaucoma in Slovakia. 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