Qualitative and quantitative evaluation of acute angle-closure mechanisms
Abstract Background To evaluate ocular biometric parameters in different subtypes of acute angle closure and compared to fellow eyes of AAC and PACS eyes. Methods This is a retrospective chart review study. A total of 167 eyes (96 patients) consisting of 71 AAC eyes, 71 fellow eyes of AAC, and 25 PA...
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BMC
2017-12-01
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| Series: | BMC Ophthalmology |
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| Online Access: | http://link.springer.com/article/10.1186/s12886-017-0635-8 |
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| author | Yanin Suwan Sunpong Jiamsawad Apichat Tantraworasin Lawrence Geyman Wasu Supakontanasan Chaiwat Teekhasaenee |
| author_facet | Yanin Suwan Sunpong Jiamsawad Apichat Tantraworasin Lawrence Geyman Wasu Supakontanasan Chaiwat Teekhasaenee |
| author_sort | Yanin Suwan |
| collection | DOAJ |
| description | Abstract Background To evaluate ocular biometric parameters in different subtypes of acute angle closure and compared to fellow eyes of AAC and PACS eyes. Methods This is a retrospective chart review study. A total of 167 eyes (96 patients) consisting of 71 AAC eyes, 71 fellow eyes of AAC, and 25 PACS eyes were recruited. All patients underwent ocular examination and biometry. The mechanism of AAC was confirmed by ultrasound biomicroscopy. We then subdivided AAC eyes into four subgroups: crowded-angle (CR), lens subluxation (LS) pupillary block (PB), and plateau iris syndrome (PL). Outcome variables included anterior chamber depth (ACD), lens thickness (LT), vitreal length (VL), axial length (AL), lens position and relative lens position (LP and RLP, respectively), and lens axial length factor (LAF). Results Among the three groups, ACD was shallower in AAC eyes than fellow eyes of AAC and PACS eyes (p < 0.01 for both) and AAC eyes demonstrated a lesser LP and RLP. The LT, VL, AL, and LAF were not significantly different among the three groups. Among the four subgroups, LS displayed the most shallow ACD (p = 0.01). The lens position in PL was greater than in CR and LS (p < 0.05 and <0.01, respectively). Conclusions AAC eyes had a more anterior lens position than fellow eyes and PACS eyes, though lens thickness did not differ among the groups. As such, an anterior lens position may offer more sensitive prognostication regarding future development of AAC compared to lens thickness. |
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| format | Article |
| id | doaj.art-0db3a7f422e341018d3389e8c773a65a |
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| issn | 1471-2415 |
| language | English |
| last_indexed | 2024-04-12T00:29:30Z |
| publishDate | 2017-12-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Ophthalmology |
| spelling | doaj.art-0db3a7f422e341018d3389e8c773a65a2022-12-22T03:55:22ZengBMCBMC Ophthalmology1471-24152017-12-011711610.1186/s12886-017-0635-8Qualitative and quantitative evaluation of acute angle-closure mechanismsYanin Suwan0Sunpong Jiamsawad1Apichat Tantraworasin2Lawrence Geyman3Wasu Supakontanasan4Chaiwat Teekhasaenee5From the Department of Ophthalmology, Faculty of Medicine, Ramathibodi Hospital, Mahidol UniversityFrom the Department of Ophthalmology, Faculty of Medicine, Ramathibodi Hospital, Mahidol UniversityFrom General Thoracic Surgery Unit, Department of Surgery, Faculty of Medicine, Chiang Mai UniversityIcahn School of Medicine at Mount SinaiFrom the Department of Ophthalmology, Faculty of Medicine, Ramathibodi Hospital, Mahidol UniversityFrom the Department of Ophthalmology, Faculty of Medicine, Ramathibodi Hospital, Mahidol UniversityAbstract Background To evaluate ocular biometric parameters in different subtypes of acute angle closure and compared to fellow eyes of AAC and PACS eyes. Methods This is a retrospective chart review study. A total of 167 eyes (96 patients) consisting of 71 AAC eyes, 71 fellow eyes of AAC, and 25 PACS eyes were recruited. All patients underwent ocular examination and biometry. The mechanism of AAC was confirmed by ultrasound biomicroscopy. We then subdivided AAC eyes into four subgroups: crowded-angle (CR), lens subluxation (LS) pupillary block (PB), and plateau iris syndrome (PL). Outcome variables included anterior chamber depth (ACD), lens thickness (LT), vitreal length (VL), axial length (AL), lens position and relative lens position (LP and RLP, respectively), and lens axial length factor (LAF). Results Among the three groups, ACD was shallower in AAC eyes than fellow eyes of AAC and PACS eyes (p < 0.01 for both) and AAC eyes demonstrated a lesser LP and RLP. The LT, VL, AL, and LAF were not significantly different among the three groups. Among the four subgroups, LS displayed the most shallow ACD (p = 0.01). The lens position in PL was greater than in CR and LS (p < 0.05 and <0.01, respectively). Conclusions AAC eyes had a more anterior lens position than fellow eyes and PACS eyes, though lens thickness did not differ among the groups. As such, an anterior lens position may offer more sensitive prognostication regarding future development of AAC compared to lens thickness.http://link.springer.com/article/10.1186/s12886-017-0635-8Acute angle-closureAngle-closureUltrasound biomicroscopyBiometry |
| spellingShingle | Yanin Suwan Sunpong Jiamsawad Apichat Tantraworasin Lawrence Geyman Wasu Supakontanasan Chaiwat Teekhasaenee Qualitative and quantitative evaluation of acute angle-closure mechanisms BMC Ophthalmology Acute angle-closure Angle-closure Ultrasound biomicroscopy Biometry |
| title | Qualitative and quantitative evaluation of acute angle-closure mechanisms |
| title_full | Qualitative and quantitative evaluation of acute angle-closure mechanisms |
| title_fullStr | Qualitative and quantitative evaluation of acute angle-closure mechanisms |
| title_full_unstemmed | Qualitative and quantitative evaluation of acute angle-closure mechanisms |
| title_short | Qualitative and quantitative evaluation of acute angle-closure mechanisms |
| title_sort | qualitative and quantitative evaluation of acute angle closure mechanisms |
| topic | Acute angle-closure Angle-closure Ultrasound biomicroscopy Biometry |
| url | http://link.springer.com/article/10.1186/s12886-017-0635-8 |
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