{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T14:53:52Z","timestamp":1785336832355,"version":"3.55.0"},"reference-count":0,"publisher":"Press of International Journal of Ophthalmology (IJO Press)","issue":"10","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int J Ophthalmol"],"published-print":{"date-parts":[[2021,10,18]]},"abstract":"<jats:p>AIM: To investigate the association of peripheral anterior synechiae (PAS) with intraocular pressure (IOP) and glaucomatous optic neuropathy (GON) in primary angle closure (PAC) and primary angle-closure glaucoma (PACG).\nMETHODS: Totally 355 eyes (238 PAC and 117 PACG) of 181 patients were included in this retrospective analysis of baseline data from a randomized clinical trial. All patients had undergone a comprehensive ophthalmic examination. The extent of PAS in clock hours as determined on gonioscopy was documented. The independent effect of the extent of PAS on IOP and the prevalence of GON were determined using multivariable generalized estimating equation (GEE) models.\nRESULTS: The frequency of GON increased with the extent of PAS and a higher IOP. PAS were more extensive (8 vs 1 clock hour, P&lt;0.001) and IOP higher (28.01 vs 18.00 mm Hg, P&lt;0.001) in PACG compared to PAC. The prevalence of GON among the PAS quartiles were 10.2% (PAS&lt;0.5 clock hours), 16.9% (PAS\u22650.5 and PAS&lt;3 clock hours), 29.6% (PAS\u22653 and PAS&lt;7 clock hours), and 74.4% (PAS\u22657 clock hours), respectively. After adjusting for IOP, age, gender, spherical equivalent, average Shaffer score and number of medications, the odds ratio (OR) for GON was 4.4 (95%CI: 1.5-13.0; P=0.007) with PAS\u22653 clock hours and 13.8 (95%CI: 4.3-43.6; P&lt;0.001) with PAS\u22657 clock hours as compared to eyes with PAS&lt;0.5 clock hours. The frequency of GON increased linearly with the extent of PAS. Extent of PAS was also associated with higher IOP. Eyes with both PAS\u22656 clock hours and IOP\u226521 mm Hg had the highest risk of GON compared to eyes with both PAS&lt;6 clock hours and IOP&lt;21 mm Hg (OR=18.0, 95%CI: 7.5-43.4; P&lt;0.001).\nCONCLUSION: The extent of PAS in PAC and PACG is an important predictor of higher IOP and is linearly associated with GON independent of IOP, suggesting other factors related to PAS formation may be involved in the development of GON in PACG.<\/jats:p>","DOI":"10.18240\/ijo.2021.10.09","type":"journal-article","created":{"date-parts":[[2021,9,24]],"date-time":"2021-09-24T03:02:21Z","timestamp":1632452541000},"page":"1533-1538","source":"Crossref","is-referenced-by-count":9,"title":["Association of peripheral anterior synechia, intraocular pressure, and glaucomatous optic neuropathy in primary angle-closure diseases"],"prefix":"10.18240","volume":"14","author":[{"name":"Department of Ophthalmology, ZhongDa Hospital, Southeast University, Nanjing 210009, Jiangsu Province, China","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ming","family":"Zhang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cong","family":"Ye","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"name":"Glaucoma Institute, Eye Hospital, School of Optometry and Ophthalmology, Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Su-Jie","family":"Fan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"name":"Handan Eye Hospital, Handan 056001, Hebei Province, China","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuan-Bo","family":"Liang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"name":"Glaucoma Institute, Eye Hospital, School of Optometry and Ophthalmology, Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ning-Li","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"name":"Beijing Tongren Hospital, Beijing Institute of Ophthalmology, Capital Medical University, Beijing 100730, China","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"7543","container-title":["International Journal of Ophthalmology"],"original-title":[],"link":[{"URL":"http:\/\/ies.ijo.cn\/en_publish\/2021\/10\/20211009.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,9,24]],"date-time":"2021-09-24T03:02:39Z","timestamp":1632452559000},"score":1,"resource":{"primary":{"URL":"http:\/\/ies.ijo.cn\/gjyken\/ch\/reader\/view_abstract.aspx?file_no=20211009&flag=1"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,10,18]]},"references-count":0,"journal-issue":{"issue":"10","published-print":{"date-parts":[[2021,10,18]]}},"URL":"https:\/\/doi.org\/10.18240\/ijo.2021.10.09","relation":{},"ISSN":["2222-3959","2227-4898"],"issn-type":[{"value":"2222-3959","type":"print"},{"value":"2227-4898","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,10,18]]}}}