1
|
Anterior Segment-Optical Coherence Tomography Bleb Morphology Comparison in Minimally Invasive Glaucoma Surgery: XEN Gel Stent vs. PreserFlo MicroShunt. Diagnostics (Basel) 2022; 12:diagnostics12051250. [PMID: 35626405 PMCID: PMC9141468 DOI: 10.3390/diagnostics12051250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/16/2022] [Accepted: 05/16/2022] [Indexed: 02/07/2023] Open
Abstract
Background: The purpose of this study is to compare the morphology of six-month follow-up blebs created by a subconjunctival glaucoma surgical device (XEN45) to those created by a PreserFlo MicroShunt with a sub-Tenon insertion, utilizing AS-OCT. Methods: A retrospective study of 29 eyes who underwent XEN45 implantation and 29 eyes who underwent PreserFlo MicroShunt implantation. The patients were analyzed at 24 h, 1 week, 1 month, 3 months and 6 months. At each visit, the maturation and morphological alterations of the blebs were observed, as well as connections with the IOP. Results: In both groups, IOP showed significant reduction at all follow ups (p < 0.0001). In XEN group, the most common bleb morphology in the immediate postoperative was the subconjuntival separation type (42%) followed by the uniform type (34%), with a trend inversion at 6 month follow up (51% of uniform type). On the contrary, the most common morphology after PreserFlo was the multiple internal layer (55%), which showed a tendency to reduce over time and was substituted by the microcystic multiform, whose percentage increased over time (17% at day 1 vs. 44% at month 6). Uniform appearance was associated by the posterior episcleral fluid (PEF) lake presence. Both horizontal and vertical diameters significantly increased over time. Conclusion: XEN and PreserFlo implantation resulted in the production of diffuse blebs with different characteristics, which may influence IOP lowering capacity and bleb revisions necessity over time.
Collapse
|
2
|
Ibarz Barberá M, Morales Fernández L, Tañá Rivero P, Gómez de Liaño R, Teus MA. Anterior-segment optical coherence tomography of filtering blebs in the early postoperative period of ab externo SIBS microshunt implantation with mitomycin C: Morphological analysis and correlation with intraocular pressure reduction. Acta Ophthalmol 2022; 100:e192-e203. [PMID: 33838021 DOI: 10.1111/aos.14863] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 02/27/2021] [Accepted: 03/16/2021] [Indexed: 12/16/2022]
Abstract
PURPOSE To analyse the morphological evolution of filtering blebs with anterior-segment OCT (AS-OCT) and its correlation with intraocular pressure after ab externo SIBS microshunt implantation with mitomycin C (MMC) during a 3-month follow-up period. METHODS Twenty-eight filtering blebs of 28 patients with open-angle glaucoma were measured horizontally and vertically in the sub-Tenon space with AS-OCT after ab externo SIBS microshunt implantation with MMC. The intraocular pressure (IOP) was monitored simultaneously at each visit. Maturation of and morphological changes in the blebs and correlations with the IOP were recorded. RESULTS The average median preoperative IOP of 20.7 (range, 12-30) mmHg decreased to 8.5 (range, 4-17), 8.9 (range, 5-17), 10.4 (range, 8-16) and 10.9 (range, 9-15) mmHg at 24 hr, 1 week, 1 month and 3 months, respectively (p < 0.001). A multiform morphology on AS-OCT prevailed at all time points, with a 3.5% rate of a uniform bleb morphology at the first week. The horizontal and vertical diameters of the blebs increased from baseline to the third month. The horizontal expansion (406 ± 127 μm on day 7, p = 0.04, 712 ± 211 μm on day 30, p = 0.02 and 952 ± 218 μm on day 90, p < 0.001) was greater than the vertical expansion (16 ± 18 μm, p = 0.3 on day 1, 63 ± 27 μm, p = 0.02 on day 30 and 137 ± 34 μm, p < 0.001 on day 90) without correlation with the IOP (r = -0.3, p = 0.2). CONCLUSION Anterior-segment OCT (AS-OCT) of the filtering blebs formed after ab externo SIBS microshunt implantation showed progressive horizontal and vertical expansion of the blebs in the sub-Tenon space, with a significant peak at the first month not significantly correlated with the decrease in the IOP.
Collapse
Affiliation(s)
| | | | | | | | - Miguel A. Teus
- Hospital Clínico Madrid Spain
- Clínica Novovisión Madrid Spain
- Hospital Universitario Príncipe de Asturias Alcalá de Henares, Madrid Spain
- Universidad de Alcalá Alcalá de Henares, Madrid Spain
| |
Collapse
|
3
|
Kim SJ, Moon SW, Lee JW. One-year Result of Trabeculectomy Following a Failed Trabecular Micro-bypass Stent. JOURNAL OF THE KOREAN OPHTHALMOLOGICAL SOCIETY 2021. [DOI: 10.3341/jkos.2021.62.2.243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
4
|
Kosugi M, Kokubun T, Tsuda S, Yamanari M, Nakazawa T. Usefulness of Polarization-sensitive Optical Coherence Tomography-derived Attenuation-coefficient Images to Visualize the Internal Structure of the Filtering Bleb. Curr Eye Res 2020; 46:606-609. [PMID: 33016140 DOI: 10.1080/02713683.2020.1825749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
PURPOSE/AIM OF THE STUDY Polarization-sensitive anterior-segmental optical coherence tomography (PS-OCT) is useful to evaluate the filtering blebs after trabeculectomy. However, the attenuation phenomenon of OCT signal disturbs the visibility of intra-bleb's structure and distribution of birefringence; a specific parameter of PS-OCT. This study aimed to evaluate the effectiveness of the attenuation-coefficient image of the filtering blebs. MATERIALS AND METHODS This study included 25 eyes 6 months after TLE. The attenuation-coefficient image of blebs was calculated from OCT intensity signal information. The contrast level of the image (reflectivity of bleb's surface wall/reflectivity of scleral flap) in both attenuation-coefficient image and intensity image and the height of the bleb's wall were calculated. The improvement extent of contrast was defined as the ratio of contrast (attenuation-coefficient image's contrast/intensity image's contrast). We compared the contrast of attenuation-coefficient image and intensity image and investigated the relationship between improvement extent of contrast and height of bleb's wall. RESULTS The contrast of the attenuation-coefficient image (317.7 ± 255.4%) was significantly higher than that of the intensity image (39.1 ± 24.5%) (P < .01) and the improvement extent of contrast was 9.5 ± 4.6 times. Furthermore, there was a positive correlation between the improvement extent of contrast and the height of the bleb's wall (r = 0.44, P = .03). CONCLUSIONS The contrast of the image at depth of filtering blebs was improved by attenuation-coefficient image. It is suggested that the attenuation-coefficient image may improve the visibility of the structure and distribution of birefringence in the blebs compared to the intensity image.
Collapse
Affiliation(s)
- Mayo Kosugi
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Taiki Kokubun
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Satoru Tsuda
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masahiro Yamanari
- Department of Technological Development, Tomey Corporation, Nagoya, Japan
| | - Toru Nakazawa
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan.,Department of Retinal Disease Control, Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan.,Department of Advanced Ophthalmic Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| |
Collapse
|
5
|
Moon S, Lee J. Clinical Outcomes of Trabeculectomy with Amniotic Membrane Transplantation and Mitomycin C in Primary Open-Angle Glaucoma. JOURNAL OF THE KOREAN OPHTHALMOLOGICAL SOCIETY 2020. [DOI: 10.3341/jkos.2020.61.8.929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
6
|
Yu ZY, Huang T, Lu L, Qu B. Comparison of measurements of anterior chamber angle via anterior segment optical coherence tomography and ultrasound biomicroscopy. World J Clin Cases 2020; 8:3249-3258. [PMID: 32874979 PMCID: PMC7441261 DOI: 10.12998/wjcc.v8.i15.3249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/11/2020] [Accepted: 07/14/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Glaucoma is an irreversible optic neuropathy with the loss of visual field and decrease of vision. The variable clinical manifestations may result in differential diagnostic difficulties. The early screening and diagnosis of glaucoma are currently experiencing a demand for anterior segment analysis tools that can gather more information with one short measurement. Therefore, we analyzed the agreement, difference, and correlation of chamber angle parameters such as angel opening distance at 500 μm (AOD500) and trabeculo-iris space area at 500 μm2 (TISA500) measured by anterior segment optical coherence tomography (AS-OCT) and ultrasound biomicroscopy (UBM).
AIM To compare the differences, correlation, and agreement in measuring AOD500 and TISA500 by AS-OCT and UBM.
METHODS Both AS-OCT and UBM were performed to measure AOD500 and TISA500 in 45 subjects (72 eyes). All subjects without glaucoma were collected from October 2015 to August 2016 at the Ophthalmology Department of the Fourth Affiliated Hospital of China Medical University. Data of the two groups (AOD500 and TISA500) were compared by nonparametric tests. Pearson correlative analysis and Bland–Altman analysis were used to compare the correlation and agreement.
RESULTS There were no significant differences between AS-OCT and UBM in measuring AOD500 (P1 = 0.110, P2 = 0.633, P3 = 0.078, and P4 = 0.474) and TISA500 (P1 = 0.584, P2 = 0.889, P3 = 0.297, and P4 = 0.550) of the four quadrants of the anterior chamber angle. There was a high correlation in measuring AOD500 (r1 = 0.562, r2 = 0.671, r3 = 0.635, and r4 = 0.720; P < 0.001) and TISA500 (r1 = 0.584, r2 = 0.889, r3 = 0.297, and r4 = 0.550; P < 0.001). There was a good agreement in measuring AOD500 and TISA500 by the two modalities.
CONCLUSION There is a high correlation and agreement between AOD500 and TISA500 measurements by AS-OCT and UBM. They are interchangeable under some circumstances. AS-OCT proves to be a better early screening tool for glaucoma.
Collapse
Affiliation(s)
- Zi-Yan Yu
- Department of Ophthalmology, Fourth Affiliated Hospital of China Medical University, Eye Hospital of China Medical University, Key Laboratory of Lens Research of Liaoning Province, Shenyang 110005, Liaoning Province, China
| | - Ting Huang
- Department of Cataract, Aier Mega Ophthalmic Hospital of Chongqing, Chongqing 400060, China
| | - Lu Lu
- Department of Ophthalmology, Fourth Affiliated Hospital of China Medical University, Eye Hospital of China Medical University, Key Laboratory of Lens Research of Liaoning Province, Shenyang 110005, Liaoning Province, China
| | - Bo Qu
- Department of Ophthalmology, Fourth Affiliated Hospital of China Medical University, Eye Hospital of China Medical University, Key Laboratory of Lens Research of Liaoning Province, Shenyang 110005, Liaoning Province, China
| |
Collapse
|
7
|
Comparison of conjunctival vascularity changes using optical coherence tomography angiography after trabeculectomy and phacotrabeculectomy. Graefes Arch Clin Exp Ophthalmol 2019; 257:2239-2255. [DOI: 10.1007/s00417-019-04412-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 07/02/2019] [Accepted: 07/02/2019] [Indexed: 12/13/2022] Open
|
8
|
Seo JH, Kim YA, Park KH, Lee Y. Evaluation of Functional Filtering Bleb Using Optical Coherence Tomography Angiography. Transl Vis Sci Technol 2019; 8:14. [PMID: 31110915 PMCID: PMC6504203 DOI: 10.1167/tvst.8.3.14] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 02/15/2019] [Indexed: 12/18/2022] Open
Abstract
Purpose This study investigated whether filtering blebs can be evaluated using optical coherence tomography angiography (OCT-A) and compared vascularity parameters with conventional bleb grading systems. Methods A total of 92 patients with glaucoma, who underwent mitomycin C–augmented trabeculectomy, were enrolled in this study, and 92 eyes were assessed in total. The participants underwent OCT-A in external mode and anterior segment photography for bleb evaluation. For evaluation of bleb vascularity, a blinded observer carefully drew the bleb area on the original OCT-A image using a semiautomated program that calculated the color and brightness densities of the selected area. A blinded observer also classified the grades of the bleb vessels using the Indiana Bleb Appearance Grading Scale (IBAGS) and Moorfields Bleb Grading System (MBGS). The vascularity parameters using OCT-A were compared with the IBAGS and MBGS results. In addition, the correlation between intraocular pressure (IOP) and the bleb vascularity parameters was assessed. Results Vessel density measured by OCT-A demonstrated excellent inter- and intraobserver reproducibility. The color and brightness densities were positively correlated with the IBAGS and MBGS vascularity scores. There was no difference in accuracy when predicting IOP risk using vascularity scores from the IBAGS and MBGS or when estimating IOP risk using the color and brightness densities on the net reclassification index. Conclusions Bleb evaluation using OCT-A can evaluate vessel vascularity and showed correlation to the IBAGS and MBGS vascularity grading. Translational Relevance Bleb vascularity measurements using OCT-A could potentially provide objective and quantitative vessel parameters for bleb evaluation following trabeculectomy.
Collapse
Affiliation(s)
- Je Hyun Seo
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea.,Department of Ophthalmology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Ye An Kim
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea.,Division of Endocrinology, Department of Internal Medicine, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Keun Heung Park
- Department of Ophthalmology, Pusan National University Hospital, Busan, Republic of Korea
| | - Young Lee
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea
| |
Collapse
|
9
|
Teus MA, Paz Moreno-Arrones J, Castaño B, Castejon MA, Bolivar G. Optical coherence tomography analysis of filtering blebs after long-term, functioning trabeculectomy and XEN® stent implant. Graefes Arch Clin Exp Ophthalmol 2019; 257:1005-1011. [PMID: 30783784 DOI: 10.1007/s00417-019-04272-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 01/21/2019] [Accepted: 02/11/2019] [Indexed: 11/26/2022] Open
Abstract
PURPOSE The purpose of this study was to use Triton® SweptSource OCT to evaluate the morphology of blebs formed when eyes are treated with XEN® implants and to compare these with the blebs in successfully functioning eyes after trabeculectomy (TB) and with eyes of healthy controls. METHODS A cross-sectional, observational study. We analyzed 25 eyes, 15 after TB and 10 with XEN® implants, comparing them with 23 healthy eyes (controls). We evaluated the conjunctival morphology of the eyes using AS-OCT. The main parameters evaluated were bleb height, sub-epithelial fibrosis, epithelial thickness, and changes in intraocular pressure (IOP). RESULTS We found that the filtering blebs formed in eyes in which a XEN® stent was implanted were significantly flatter (bleb height 417 ± 183 μm) than the blebs formed in TB eyes (bleb height 618 ± 256 μm, p < 0.05). Moreover, sub-epithelial fibrosis did not develop in any of the blebs produced by the XEN stent, whereas some fibrosis was evident in 40% of the blebs that formed after TB (p < 0.05). The epithelium was thicker when the XEN implant was used (65 ± 18.5 μm) than when eyes underwent TB (60 ± 17.7 μm), and it was thicker than in control eyes (51 ± 9.7 μm, p < 0.05). Moreover, the decrease in the IOP induced by the XEN® stent (- 8.5 ± 5.3 mmHg) was similar to that produced by TB (- 8.8 ± 5.2 mmHg, p > 0.05). CONCLUSIONS Filtering blebs obtained after the introduction of a XEN® stent were morphologically distinct to those produced by TB, and they are more similar to the healthy conjunctiva.
Collapse
Affiliation(s)
- Miguel A Teus
- Department of Ophthalmology, Hospital Universitario Príncipe de Asturias, Carretera Alcalá-Meco s/n, Alcalá de Henares, 28805, Madrid, Spain
- School of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain
| | - Javier Paz Moreno-Arrones
- Department of Ophthalmology, Hospital Universitario Príncipe de Asturias, Carretera Alcalá-Meco s/n, Alcalá de Henares, 28805, Madrid, Spain
| | - Beatriz Castaño
- Department of Ophthalmology, Hospital Universitario Príncipe de Asturias, Carretera Alcalá-Meco s/n, Alcalá de Henares, 28805, Madrid, Spain.
| | - Miguel A Castejon
- Department of Ophthalmology, Hospital Universitario Príncipe de Asturias, Carretera Alcalá-Meco s/n, Alcalá de Henares, 28805, Madrid, Spain
| | - Gema Bolivar
- Department of Ophthalmology, Hospital Universitario Príncipe de Asturias, Carretera Alcalá-Meco s/n, Alcalá de Henares, 28805, Madrid, Spain
| |
Collapse
|
10
|
Avetisov SE, Petrov SY, Volzhanin AV. [Optical coherence tomography for examination of glaucoma surgery site]. Vestn Oftalmol 2018; 134:250-256. [PMID: 30499525 DOI: 10.17116/oftalma2018134051250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The article reviews the results of using optical coherence tomography (OCT) - a non-invasive non-contact examination method for obtaining a tomographic slice image of the site of glaucoma surgery. The method helped reveal the functional relationships between the newly created outflow pathways and various parameters of the filtering bleb such as its linear dimensions, wall structure, presence of microcysts, position of drainage, etc. Due to its high resolution and noninvasiveness, OCT can be reliably used to examine the structure of aqueous outflow pathways in different postoperative periods with accuracy close to morphometric. The amount of data that had been obtained with the method has allowed the creation of new classifications and clarification of OCT-relevant prognostic signs for glaucoma surgery site.
Collapse
Affiliation(s)
- S E Avetisov
- Research Institute of Eye Diseases, 11A Rossolimo St., Moscow, Russian Federation, 119021; I.M. Sechenov First Moscow Medical University, 8-2 Trubetskaya St., Moscow, Russian Federation, 119991
| | - S Yu Petrov
- Research Institute of Eye Diseases, 11A Rossolimo St., Moscow, Russian Federation, 119021
| | - A V Volzhanin
- Research Institute of Eye Diseases, 11A Rossolimo St., Moscow, Russian Federation, 119021
| |
Collapse
|
11
|
Prediction of Surgical Outcome After Trabeculectomy for Neovascular Glaucoma With Anterior-segment Optical Coherence Tomography. J Glaucoma 2018; 27:1157-1164. [PMID: 30188465 DOI: 10.1097/ijg.0000000000001081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
PURPOSE To determine the potential of anterior-segment optical coherence tomography (AS-OCT) to predict posttrabeculectomy outcomes in neovascular glaucoma (NVG). PATIENTS AND METHODS We recruited 45 eyes of 40 NVG patients who underwent trabeculectomy. The patients were divided into success and failure groups based on the posttrabeculectomy outcome after 12 months. AS-OCT findings were compared in the success and failure groups at 1 and 2 weeks and 1, 3, 6, and 12 months. We also analyzed early posttrabeculectomy bleb parameters with multiple logistic regression, stepwise multiple regression, and the receiver operating characteristic curve to evaluate the power of these parameters to predict long-term outcomes. RESULTS Intraocular pressure at 6 and 12 months was lower in the success group than the failure group (P<0.0016=0.0048). Reflectivity of the bleb wall was higher in the failure group than the success group throughout the study (all: P<0.0016). Age and reflectivity of the bleb wall at 1 week were risk factors for failure with odds ratios for failure of 0.91 and 1.67. The area under the receiver operating characteristic curve for reflectivity of the bleb wall at 1 week was 0.943 with the cutoff set at 128.9 (sensitivity: 85.7%; specificity: 100.0%). Stepwise multiple regression analysis showed that reflectivity of the bleb wall at 1 week independently indicated the bleb survival period (β=-0.84; P<0.001). CONCLUSIONS AS-OCT-measured reflectivity of the bleb wall, measured at 1 week of trabeculectomy for NVG, might be able to predict of the final status of the bleb.
Collapse
|
12
|
Kokubun T, Tsuda S, Kunikata H, Himori N, Yokoyama Y, Kunimatsu-Sanuki S, Nakazawa T. Anterior-Segment Optical Coherence Tomography for Predicting Postoperative Outcomes After Trabeculectomy. Curr Eye Res 2018. [PMID: 29513109 DOI: 10.1080/02713683.2018.1446535] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE To determine whether anterior-segment optical coherence tomography (AS-OCT) can be used to predict post-trabeculectomy bleb outcomes. MATERIALS AND METHODS We divided 58 eyes of 47 trabeculectomy patients into success or failure groups based on their status at 12 months after surgery. We then compared various AS-OCT measurement parameters between the two groups at 1 and 2 weeks and 1, 3, 6, and 12 months. We also analyzed the early post-trabeculectomy bleb parameters with multiple logistic regression, stepwise multiple regression, and the receiver operating characteristic (ROC) curve, to evaluate the power of these parameters to predict long-term outcomes. RESULTS Intraocular pressure 3 or more months after trabeculectomy was significantly lower in the success group than the failure group (all: P < 0.0016). Cleft volume was significantly higher 6 or more months after trabeculectomy in the success group than the failure group (P = 0.0027 and <0.0016). Reflectivity of the bleb wall was significantly higher in the failure group than the success group at 2 weeks and all later time points (all: P < 0.0016). Reflectivity of the bleb wall at 2 weeks after trabeculectomy was a risk factor for failure, with an odds ratio (OR) for failure of 2.48 (95% confidence interval, 1.31-4.68, increasing per 10 AU). The area under the ROC curve for reflectivity of the bleb wall at 2 weeks after trabeculectomy was 0.775 when the cutoff value was set at 122.8, with sensitivity, specificity, and OR of 78.3%, 80.0%, and 14.4, respectively. A stepwise multiple regression analysis showed that reflectivity of the bleb wall at 2 weeks was an independent factor indicating postoperative bleb survival period (β = -0.39, P = 0.007). CONCLUSIONS Reflectivity of the bleb wall, measured by AS-OCT, may be an early post-trabeculectomy predictor of bleb outcome.
Collapse
Affiliation(s)
- Taiki Kokubun
- a Department of Ophthalmology , Tohoku University Graduate School of Medicine , Sendai , Miyagi , Japan
| | - Satoru Tsuda
- b Department of Retinal Disease Control, Ophthalmology , Tohoku University Graduate School of Medicine , Sendai , Japan
| | - Hiroshi Kunikata
- a Department of Ophthalmology , Tohoku University Graduate School of Medicine , Sendai , Miyagi , Japan.,b Department of Retinal Disease Control, Ophthalmology , Tohoku University Graduate School of Medicine , Sendai , Japan
| | - Noriko Himori
- a Department of Ophthalmology , Tohoku University Graduate School of Medicine , Sendai , Miyagi , Japan
| | - Yu Yokoyama
- a Department of Ophthalmology , Tohoku University Graduate School of Medicine , Sendai , Miyagi , Japan
| | - Shiho Kunimatsu-Sanuki
- a Department of Ophthalmology , Tohoku University Graduate School of Medicine , Sendai , Miyagi , Japan
| | - Toru Nakazawa
- a Department of Ophthalmology , Tohoku University Graduate School of Medicine , Sendai , Miyagi , Japan.,b Department of Retinal Disease Control, Ophthalmology , Tohoku University Graduate School of Medicine , Sendai , Japan.,c Department of Advanced Ophthalmic Medicine , Tohoku University Graduate School of Medicine , Sendai , Japan.,d Department of Ophthalmic Imaging and Information Analytics , Tohoku University Graduate School of Medicine , Sendai , Japan
| |
Collapse
|