Clinical observation of 3 minutes dark-room provocative test in patients with laser peripheral iridectomy in the fellow eyes of acute angle-closure glaucoma
AIM:To observe related biological parameters of 3 minutes dark-room provocative test in patients with laser peripheral iridectomy(LPI)in the fellow eyes of acute primary angle-closure(APAC)by ultrasound biomicroscopy(UBM). To explore the risk factors in primary angle closure suspect(PACS)patients wi...
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| Format: | Article |
| Language: | English |
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Press of International Journal of Ophthalmology (IJO PRESS)
2017-07-01
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| Series: | Guoji Yanke Zazhi |
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| Online Access: | http://ies.ijo.cn/cn_publish/2017/7/201707037.pdf |
| _version_ | 1811327446153166848 |
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| author | Tao Liang Yan-Hua Gao Gui-Bo Liu Yan-Ru Xiang Yong-Hong Wang |
| author_facet | Tao Liang Yan-Hua Gao Gui-Bo Liu Yan-Ru Xiang Yong-Hong Wang |
| author_sort | Tao Liang |
| collection | DOAJ |
| description | AIM:To observe related biological parameters of 3 minutes dark-room provocative test in patients with laser peripheral iridectomy(LPI)in the fellow eyes of acute primary angle-closure(APAC)by ultrasound biomicroscopy(UBM). To explore the risk factors in primary angle closure suspect(PACS)patients with progressive angle closure after LPI. <p>METHODS: Seventy-eight eyes of APAC patients without peripheral anterior synechia were selected. Each eye underwent 3 minutes dark-room provocative test after LPI. Anterior segment parameters, including anterior chamber depth(ACD), anterior chamber angle open distance500(AOD<sub>500</sub>), peripheral iris thickness(PIT), iris convex(IC), the position of iris insertion and trabecular-ciliary process distance(TCPD), and the number of positional angle closure(NPAC)were observed and analyzed by statistic methods. <p>RESULTS:Patients with APAC were examined by UBM after LPI and 26 eyes(33%)occurs at least one positional angle closure,19 eyes(24%)were positive in 3 minutes dark-room provocative test among them. It occurs a positive relationship between the elevation intraocular pressure and the number of positional angle closure in dark-room provocative test(<i>r</i>=0.84, <i>P</i><0.01). AOD<sub>500</sub>, IT and IC were significantly changed from normal light to darkroom between positional angle closure positive group and positional angle closure negative group(all <i>P</i><0.01). In single factor analysis, AOD<sub>500</sub>(<i>P</i>=0.003), IT(<i>P</i>=0.012), IC(<i>P</i>=0.043), TPCD(<i>P</i>=0.015), the position of iris insertion(<i>P</i>=0.024)were correlative factors of positive results. In multiple-factor analysis, only IT(<i>P</i>=0.011), TPCD(<i>P</i>=0.009), iris root attachment points(<i>P</i>=0.02)were independent risk factors of positive results. <p>CONCLUSION:A certain proportion of patients with PACS after LPI appeared positional angle closure in a dark room. Peripheral iris hypertrophy, anterior displacement of the ciliary body and iris root attachment points are vital risk factors. Long-term follow-up study and intervention treatment are required in these patients after LPI. |
| first_indexed | 2024-04-13T15:06:47Z |
| format | Article |
| id | doaj.art-aeafe85a82ba4734b5a1198e24031835 |
| institution | Directory Open Access Journal |
| issn | 1672-5123 1672-5123 |
| language | English |
| last_indexed | 2024-04-13T15:06:47Z |
| publishDate | 2017-07-01 |
| publisher | Press of International Journal of Ophthalmology (IJO PRESS) |
| record_format | Article |
| series | Guoji Yanke Zazhi |
| spelling | doaj.art-aeafe85a82ba4734b5a1198e240318352022-12-22T02:42:08ZengPress of International Journal of Ophthalmology (IJO PRESS)Guoji Yanke Zazhi1672-51231672-51232017-07-011771340134310.3980/j.issn.1672-5123.2017.7.37Clinical observation of 3 minutes dark-room provocative test in patients with laser peripheral iridectomy in the fellow eyes of acute angle-closure glaucomaTao Liang0Yan-Hua Gao1Gui-Bo Liu2Yan-Ru Xiang3Yong-Hong Wang4Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong Province, ChinaDepartment of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong Province, ChinaDepartment of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong Province, ChinaDepartment of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong Province, ChinaDepartment of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong Province, ChinaAIM:To observe related biological parameters of 3 minutes dark-room provocative test in patients with laser peripheral iridectomy(LPI)in the fellow eyes of acute primary angle-closure(APAC)by ultrasound biomicroscopy(UBM). To explore the risk factors in primary angle closure suspect(PACS)patients with progressive angle closure after LPI. <p>METHODS: Seventy-eight eyes of APAC patients without peripheral anterior synechia were selected. Each eye underwent 3 minutes dark-room provocative test after LPI. Anterior segment parameters, including anterior chamber depth(ACD), anterior chamber angle open distance500(AOD<sub>500</sub>), peripheral iris thickness(PIT), iris convex(IC), the position of iris insertion and trabecular-ciliary process distance(TCPD), and the number of positional angle closure(NPAC)were observed and analyzed by statistic methods. <p>RESULTS:Patients with APAC were examined by UBM after LPI and 26 eyes(33%)occurs at least one positional angle closure,19 eyes(24%)were positive in 3 minutes dark-room provocative test among them. It occurs a positive relationship between the elevation intraocular pressure and the number of positional angle closure in dark-room provocative test(<i>r</i>=0.84, <i>P</i><0.01). AOD<sub>500</sub>, IT and IC were significantly changed from normal light to darkroom between positional angle closure positive group and positional angle closure negative group(all <i>P</i><0.01). In single factor analysis, AOD<sub>500</sub>(<i>P</i>=0.003), IT(<i>P</i>=0.012), IC(<i>P</i>=0.043), TPCD(<i>P</i>=0.015), the position of iris insertion(<i>P</i>=0.024)were correlative factors of positive results. In multiple-factor analysis, only IT(<i>P</i>=0.011), TPCD(<i>P</i>=0.009), iris root attachment points(<i>P</i>=0.02)were independent risk factors of positive results. <p>CONCLUSION:A certain proportion of patients with PACS after LPI appeared positional angle closure in a dark room. Peripheral iris hypertrophy, anterior displacement of the ciliary body and iris root attachment points are vital risk factors. Long-term follow-up study and intervention treatment are required in these patients after LPI.http://ies.ijo.cn/cn_publish/2017/7/201707037.pdfprimary angle-closurelaser peripheral iridectomydark-room provocative testultrasound biomicroscopyultrasound biomicroscopy |
| spellingShingle | Tao Liang Yan-Hua Gao Gui-Bo Liu Yan-Ru Xiang Yong-Hong Wang Clinical observation of 3 minutes dark-room provocative test in patients with laser peripheral iridectomy in the fellow eyes of acute angle-closure glaucoma Guoji Yanke Zazhi primary angle-closure laser peripheral iridectomy dark-room provocative test ultrasound biomicroscopy ultrasound biomicroscopy |
| title | Clinical observation of 3 minutes dark-room provocative test in patients with laser peripheral iridectomy in the fellow eyes of acute angle-closure glaucoma |
| title_full | Clinical observation of 3 minutes dark-room provocative test in patients with laser peripheral iridectomy in the fellow eyes of acute angle-closure glaucoma |
| title_fullStr | Clinical observation of 3 minutes dark-room provocative test in patients with laser peripheral iridectomy in the fellow eyes of acute angle-closure glaucoma |
| title_full_unstemmed | Clinical observation of 3 minutes dark-room provocative test in patients with laser peripheral iridectomy in the fellow eyes of acute angle-closure glaucoma |
| title_short | Clinical observation of 3 minutes dark-room provocative test in patients with laser peripheral iridectomy in the fellow eyes of acute angle-closure glaucoma |
| title_sort | clinical observation of 3 minutes dark room provocative test in patients with laser peripheral iridectomy in the fellow eyes of acute angle closure glaucoma |
| topic | primary angle-closure laser peripheral iridectomy dark-room provocative test ultrasound biomicroscopy ultrasound biomicroscopy |
| url | http://ies.ijo.cn/cn_publish/2017/7/201707037.pdf |
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