Pub Date : 2024-05-01DOI: 10.1016/j.ogla.2023.12.002
Hongli Yang PhD, Jack P. Rees BA, Facundo G. Sanchez MD, Stuart K. Gardiner PhD, Steven L. Mansberger MD, MPH
Objective
To compare the magnitude and location of automated segmentation errors of the Bruch’s membrane opening-minimum rim width (BMO-MRW) and retinal nerve fiber layer thickness (RNFLT).
Design
Cross-sectional study.
Participants
We included 162 glaucoma suspect or open-angle glaucoma eyes from 162 participants.
Methods
We used spectral-domain optic coherence tomography (Spectralis 870 nm, Heidelberg Engineering) to image the optic nerve with 24 radial optic nerve head B-scans and a 12-degree peripapillary circle scan, and exported the native “automated segmentation only” results for BMO-MRW and RNFLT. We also exported the results after “manual refinement” of the measurements.
Main Outcome Measures
We calculated the absolute and proportional error globally and within the 12 30-degree sectors of the optic disc. We determined whether the glaucoma classifications were different between BMO-MRW and RNFLT as a result of manual and automatic segmentation.
Results
The absolute error mean was larger for BMO-MRW than for RNFLT (10.8 μm vs. 3.58 μm, P < 0.001). However, the proportional errors were similar (4.3% vs. 4.4%, P = 0.47). In a multivariable regression model, errors in BMO-MRW were not significantly associated with age, location, magnitude, or severity of glaucoma loss (all P ≥ 0.05). However, larger RNFLT errors were associated with the superior and inferior sector location, thicker nerve fiber layer, and worse visual field (all P < 0.05). Errors in BMO-MRW and RNFLT were not likely to occur in the same sector location (R2 = 0.001; P = 0.15). With manual refinement, the glaucoma classification changed in 7.8% and 6.2% of eyes with BMO-MRW and RNFLT, respectively.
Conclusions
Both BMO-MRW and RNFLT measurements included segmentation errors, which did not seem to have a common location, and may result in differences in glaucoma classification.
Financial Disclosure(s)
Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
{"title":"OCT Segmentation Errors with Bruch's Membrane Opening-Minimum Rim Width as Compared with Retinal Nerve Fiber Layer Thickness","authors":"Hongli Yang PhD, Jack P. Rees BA, Facundo G. Sanchez MD, Stuart K. Gardiner PhD, Steven L. Mansberger MD, MPH","doi":"10.1016/j.ogla.2023.12.002","DOIUrl":"10.1016/j.ogla.2023.12.002","url":null,"abstract":"<div><h3>Objective</h3><p>To compare the magnitude and location of automated segmentation errors of the Bruch’s membrane opening-minimum rim width (BMO-MRW) and retinal nerve fiber layer thickness (RNFLT).</p></div><div><h3>Design</h3><p>Cross-sectional study.</p></div><div><h3>Participants</h3><p>We included 162 glaucoma suspect or open-angle glaucoma eyes from 162 participants.</p></div><div><h3>Methods</h3><p>We used spectral-domain optic coherence tomography (Spectralis 870 nm, Heidelberg Engineering) to image the optic nerve with 24 radial optic nerve head B-scans and a 12-degree peripapillary circle scan, and exported the native “automated segmentation only” results for BMO-MRW and RNFLT. We also exported the results after “manual refinement” of the measurements.</p></div><div><h3>Main Outcome Measures</h3><p>We calculated the absolute and proportional error globally and within the 12 30-degree sectors of the optic disc. We determined whether the glaucoma classifications were different between BMO-MRW and RNFLT as a result of manual and automatic segmentation.</p></div><div><h3>Results</h3><p>The absolute error mean was larger for BMO-MRW than for RNFLT (10.8 μm vs. 3.58 μm, <em>P</em> < 0.001). However, the proportional errors were similar (4.3% vs. 4.4%, <em>P</em> = 0.47). In a multivariable regression model, errors in BMO-MRW were not significantly associated with age, location, magnitude, or severity of glaucoma loss (all <em>P</em> ≥ 0.05). However, larger RNFLT errors were associated with the superior and inferior sector location, thicker nerve fiber layer, and worse visual field (all <em>P</em> < 0.05). Errors in BMO-MRW and RNFLT were not likely to occur in the same sector location (<em>R</em><sup><em>2</em></sup> = 0.001; <em>P</em> = 0.15). With manual refinement, the glaucoma classification changed in 7.8% and 6.2% of eyes with BMO-MRW and RNFLT, respectively.</p></div><div><h3>Conclusions</h3><p>Both BMO-MRW and RNFLT measurements included segmentation errors, which did not seem to have a common location, and may result in differences in glaucoma classification.</p></div><div><h3>Financial Disclosure(s)</h3><p>Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.</p></div>","PeriodicalId":19519,"journal":{"name":"Ophthalmology. Glaucoma","volume":"7 3","pages":"Pages 308-315"},"PeriodicalIF":2.9,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138813990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-01DOI: 10.1016/j.ogla.2023.12.005
Sang Wook Jin MD , Joseph Caprioli MD
Purpose
To report the contributing factors to the successful long-term treatment outcomes of a large series of patients with malignant glaucoma (MG).
Design
Retrospective, interventional, consecutive case series.
Participants
This study used data collected from 1997 to 2022 from the Glaucoma Division of the Stein Eye Institute, University of California, Los Angeles (UCLA). All patients with MG who underwent treatment at UCLA were enrolled.
Methods
The following demographic and clinical data were collected and analyzed for their relevance to successful treatment: age, gender, ethnicity, glaucoma family history, visual acuity (VA), intraocular pressure (IOP), lens status, prior glaucoma diagnosis, prior ocular surgery, prior use of antiglaucoma agents, ultrasonic axial length, qualitative anterior chamber (AC) depth, and treatment methods and outcomes.
Main Outcome Measures
Anatomical success was defined as restoration of normal AC depth, indicating relief of the MG episode. Complete success was defined as anatomical success and the reduction of IOP to < 21 mmHg without further surgery, with or without medications.
Results
A total of 74 eyes of 73 patients were identified with a diagnosis of MG. The median (interquartile range) age of the patients at the time of MG presentation was 70 years (19.5) and 49 (75.4%) patients were female. The most common prior diagnosis before MG was primary angle closure glaucoma (PACG) (34 eyes, 51.5%). The initiating event for 30 eyes (45.5%) was glaucoma surgery and for 21 eyes (31.8%) was cataract surgery. Most eyes were pseudophakic (57, 86.4%). Fifty-six eyes underwent medical treatment; MG resolved in 2 eyes with medical treatment alone. Nine eyes (7 eyes = treatment naïve; 2 eyes = failed medical treatment) underwent laser treatment and MG resolved in 5 eyes. Among the 55 eyes which had surgical treatment, 52 eyes failed medical treatment and 3 eyes were treatment naïve. The anatomical success rate with surgical treatment was 96.4% and the most commonly performed surgical procedure was combined pars plana antero-central vitrectomy, hyaloido-zonulectomy, and iridectomy.
Conclusions
Female gender, PACG, and glaucoma surgery were predisposing factors for the development of MG. Medical treatment alone for MG was inadequate in the vast majority of cases. A surgical technique consisting of combined pars plana antero-central vitrectomy, hyaloido-zonulectomy and iridectomy consistently produced high long-term success.
Financial Disclosure(s)
Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
{"title":"Long-term Treatment Outcomes for Malignant Glaucoma","authors":"Sang Wook Jin MD , Joseph Caprioli MD","doi":"10.1016/j.ogla.2023.12.005","DOIUrl":"10.1016/j.ogla.2023.12.005","url":null,"abstract":"<div><h3>Purpose</h3><p>To report the contributing factors to the successful long-term treatment outcomes of a large series of patients with malignant glaucoma (MG).</p></div><div><h3>Design</h3><p>Retrospective, interventional, consecutive case series.</p></div><div><h3>Participants</h3><p>This study used data collected from 1997 to 2022 from the Glaucoma Division of the Stein Eye Institute, University of California, Los Angeles (UCLA). All patients with MG who underwent treatment at UCLA were enrolled.</p></div><div><h3>Methods</h3><p>The following demographic and clinical data were collected and analyzed for their relevance to successful treatment: age, gender, ethnicity, glaucoma family history, visual acuity<span><span> (VA), intraocular pressure (IOP), lens status, prior glaucoma diagnosis, prior ocular surgery, prior use of </span>antiglaucoma agents<span>, ultrasonic axial length, qualitative anterior chamber (AC) depth, and treatment methods and outcomes.</span></span></p></div><div><h3>Main Outcome Measures</h3><p>Anatomical success was defined as restoration of normal AC depth, indicating relief of the MG episode. Complete success was defined as anatomical success and the reduction of IOP to < 21 mmHg without further surgery, with or without medications.</p></div><div><h3>Results</h3><p><span>A total of 74 eyes of 73 patients were identified with a diagnosis of MG. The median (interquartile range) age of the patients at the time of MG presentation was 70 years (19.5) and 49 (75.4%) patients were female. The most common prior diagnosis before MG was primary angle closure glaucoma<span><span> (PACG) (34 eyes, 51.5%). The initiating event for 30 eyes (45.5%) was glaucoma surgery and for 21 eyes (31.8%) was </span>cataract surgery. Most eyes were pseudophakic (57, 86.4%). Fifty-six eyes underwent medical treatment; MG resolved in 2 eyes with medical treatment alone. Nine eyes (7 eyes = treatment naïve; 2 eyes = failed medical treatment) underwent </span></span>laser treatment<span> and MG resolved in 5 eyes. Among the 55 eyes which had surgical treatment, 52 eyes failed medical treatment and 3 eyes were treatment naïve. The anatomical success rate with surgical treatment was 96.4% and the most commonly performed surgical procedure was combined pars plana<span> antero-central vitrectomy<span>, hyaloido-zonulectomy, and iridectomy.</span></span></span></p></div><div><h3>Conclusions</h3><p>Female gender, PACG, and glaucoma surgery were predisposing factors for the development of MG. Medical treatment alone for MG was inadequate in the vast majority of cases. A surgical technique consisting of combined pars plana antero-central vitrectomy, hyaloido-zonulectomy and iridectomy consistently produced high long-term success.</p></div><div><h3>Financial Disclosure(s)</h3><p>Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.</p></div>","PeriodicalId":19519,"journal":{"name":"Ophthalmology. Glaucoma","volume":"7 3","pages":"Pages 282-289"},"PeriodicalIF":2.9,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139075988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Selective laser trabeculoplasty (SLT) is a first-line treatment for glaucoma and ocular hypertension. However, due to insufficient comparative evidence in efficacy and safety, several SLT treatment protocols are currently used in practice. The objective of this trial was to compare the clinical outcomes of the 4 most significant SLT variants.
Four hundred patients with glaucoma or ocular hypertension. The cohort consisted of both treatment-naive patients and patients undergoing glaucoma treatment, at different stages of disease.
Methods
Selective laser trabeculoplasty was performed with 50 ± 5 laser spots in 180 degrees or with 100 ± 10 spots in 360 degrees. The laser power was titrated to either just below the cavitation bubble level (“standard energy”) or to a level producing cavitation bubbles at 50% to 75% of laser applications (“high energy”). Thus, 4 different treatment protocols were included – 180/standard, 180/high, 360/standard, and 360/high. The study adhered as close as possible to regular clinical management, but within a scientific framework.
Main Outcome Measures
Reduction of intraocular pressure (IOP) 1 to 6 months after SLT. The proportion of patients achieving a 20% IOP reduction without any further intervention. Time to glaucoma treatment escalation in a Kaplan–Meier survival analysis.
Results
SLT performed with the 360/high protocol was shown to be superior regarding all primary endpoints. The IOP reduction 1 to 6 months after SLT was 5.4 mmHg in the 360/high group, compared to 3.4, 3.2, and 4.2 mmHg with the 180/standard, 180/high, and 360/standard protocols, respectively (P < 0.001). Furthermore, the success rate after 6 months was significantly higher –58.3%, compared with 30.2%, 29.3%, and 41.7% (P < 0.001). The median time to glaucoma treatment escalation was more than twice as long with 360/high SLT –1323 days, compared to 437 days, 549 days, and 620 days (P < 0.001). Although postoperative discomfort was more frequent with the 360/high protocol, symptoms were generally mild and transient. Adverse events were rare in all groups.
Conclusions
The magnitude and longevity of SLT results increases substantially if SLT is performed according to the 360/high protocol, without compromising safety. Therefore, we recommend that 360/high SLT be considered as standard treatment.
Financial Disclosures
The authors have no proprietary or commercial interest in any materials discussed in this article.
{"title":"Optimal Performance of Selective Laser Trabeculoplasty","authors":"Tobias Dahlgren MD , Marcelo Ayala MD, PhD , Madeleine Zetterberg MD, PhD","doi":"10.1016/j.ogla.2023.10.004","DOIUrl":"10.1016/j.ogla.2023.10.004","url":null,"abstract":"<div><h3>Purpose</h3><p>Selective laser trabeculoplasty (SLT) is a first-line treatment for glaucoma and ocular hypertension. However, due to insufficient comparative evidence in efficacy and safety, several SLT treatment protocols are currently used in practice. The objective of this trial was to compare the clinical outcomes of the 4 most significant SLT variants.</p></div><div><h3>Design</h3><p>Prospective, multicenter, masked, randomized controlled trial (RCT).</p></div><div><h3>Participants</h3><p>Four hundred patients with glaucoma or ocular hypertension. The cohort consisted of both treatment-naive patients and patients undergoing glaucoma treatment, at different stages of disease.</p></div><div><h3>Methods</h3><p>Selective laser trabeculoplasty was performed with 50 ± 5 laser spots in 180 degrees or with 100 ± 10 spots in 360 degrees. The laser power was titrated to either just below the cavitation bubble level (“standard energy”) or to a level producing cavitation bubbles at 50% to 75% of laser applications (“high energy”). Thus, 4 different treatment protocols were included – <em>180/standard</em>, <em>180/high</em>, <em>360/standard</em>, and <em>360/high</em>. The study adhered as close as possible to regular clinical management, but within a scientific framework.</p></div><div><h3>Main Outcome Measures</h3><p>Reduction of intraocular pressure (IOP) 1 to 6 months after SLT. The proportion of patients achieving a 20% IOP reduction without any further intervention. Time to glaucoma treatment escalation in a Kaplan–Meier survival analysis.</p></div><div><h3>Results</h3><p>SLT performed with the 360/high protocol was shown to be superior regarding all primary endpoints. The IOP reduction 1 to 6 months after SLT was 5.4 mmHg in the 360/high group, compared to 3.4, 3.2, and 4.2 mmHg with the 180/standard, 180/high, and 360/standard protocols, respectively (<em>P</em> < 0.001). Furthermore, the success rate after 6 months was significantly higher –58.3%, compared with 30.2%, 29.3%, and 41.7% (<em>P</em> < 0.001). The median time to glaucoma treatment escalation was more than twice as long with 360/high SLT –1323 days, compared to 437 days, 549 days, and 620 days (<em>P</em> < 0.001). Although postoperative discomfort was more frequent with the 360/high protocol, symptoms were generally mild and transient. Adverse events were rare in all groups.</p></div><div><h3>Conclusions</h3><p>The magnitude and longevity of SLT results increases substantially if SLT is performed according to the <em>360/high</em> protocol, without compromising safety. Therefore, we recommend that <em>360/high SLT</em> be considered as standard treatment.</p></div><div><h3>Financial Disclosures</h3><p>The authors have no proprietary or commercial interest in any materials discussed in this article.</p></div>","PeriodicalId":19519,"journal":{"name":"Ophthalmology. Glaucoma","volume":"7 2","pages":"Pages 105-115"},"PeriodicalIF":2.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589419623001916/pdfft?md5=7d232a54a729dcdd06dbc8a9dcbeff0b&pid=1-s2.0-S2589419623001916-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41221485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.1016/j.ogla.2023.10.007
Devendra Maheshwari MD , Davinder S. Grover MD, MPH , Rengappa Ramakrishnan DO, MS , Madhavi Ramanatha Pillai DNB , Drishti Chautani MBBS , Mohideen Abdul Kader PMT, DNB
Purpose
To study the early postoperative efficacy and safety of an Ab Interno microhook trabeculotomy (microLOT) combined with cataract surgery in patients with open-angle glaucoma.
Methods
This prospective, randomized, interventional study was conducted on consecutive patients with visually significant cataract and mild-moderate open-angle glaucoma. One hundred fourteen patients were included for analysis. The patients were randomized to undergo microhook trabeculotomy with phacoemulsification (group 1) or phacoemulsification alone (group 2). All patients were evaluated on postoperative day 1, 15, and 30, as well as 3, 6, and 12 months postoperatively. A P value < 0.05 was considered statistically significant. Baseline and follow-up visits were compared to determine significant differences in the number of antiglaucoma medications (AGMs), intraocular pressure (IOP), and best-corrected visual acuity.
Results
There were 57 patients in each group. The baseline characteristics were similar between the 2 groups, except the number of AGMs, which was greater in group 2. The mean preoperative IOP for group 1 (phaco-microLOT) was 26.5 mmHg ± 5.2 and group 2 (phaco-alone group) was 25.3 mmHg ± 3.1 which decreased to 12.5 mmHg ±3.6 (P < 0.001) and 20.0 mmHg ± 2.7(P < 0.001) at 12 months, respectively. Logarithm of the minimum angle of resolution visual acuity improved from 0.48 (interquartile range [IQR], 0.30–0.60) preoperatively to 0.00 (0.00–0.18) postoperatively (P < 0001) in group 1 and improved from 0.30 (IQR, 0.30–0.48) to 0.00 (0.00–0.00) in group 2 (P < 0.001). In group 1, the mean (standard deviation [SD]) AGM used preoperatively was 0.6 (0.9) which was significantly reduced to 0.2 (0.5) at 12 months postoperatively, whereas in group 2, at 12 months, the mean (SD) AGM used was reduced from 1.4 (0.6) to 1.1 (0.9). In group 1, 90.3% of eyes achieved complete success at the end of 1 year. The most common complication was hyphema, noted in 4 patients with 1 eye requiring an anterior chamber washout.
Conclusion
Ab interno microhook trabeculotomy (microLOT) combined with phacoemulsification in patients with open-angle glaucoma is an efficacious procedure with relatively minimal complications.
Financial Disclosure(s)
Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
{"title":"Early Outcomes of Combined Phacoemulsification and Ab Interno Tanito Microhook Trabeculotomy in Open-Angle Glaucoma","authors":"Devendra Maheshwari MD , Davinder S. Grover MD, MPH , Rengappa Ramakrishnan DO, MS , Madhavi Ramanatha Pillai DNB , Drishti Chautani MBBS , Mohideen Abdul Kader PMT, DNB","doi":"10.1016/j.ogla.2023.10.007","DOIUrl":"10.1016/j.ogla.2023.10.007","url":null,"abstract":"<div><h3>Purpose</h3><p><span><span>To study the early postoperative efficacy and safety of an Ab Interno microhook trabeculotomy (microLOT) combined with </span>cataract surgery </span>in patients with open-angle glaucoma.</p></div><div><h3>Methods</h3><p><span>This prospective, randomized, interventional study was conducted on consecutive patients with visually significant cataract and mild-moderate open-angle glaucoma. One hundred fourteen patients were included for analysis. The patients were randomized to undergo microhook trabeculotomy with phacoemulsification (group 1) or phacoemulsification alone (group 2). All patients were evaluated on postoperative day 1, 15, and 30, as well as 3, 6, and 12 months postoperatively. A </span><em>P</em><span><span> value < 0.05 was considered statistically significant. Baseline and follow-up visits were compared to determine significant differences in the number of antiglaucoma medications (AGMs), intraocular pressure (IOP), and best-corrected </span>visual acuity.</span></p></div><div><h3>Results</h3><p>There were 57 patients in each group. The baseline characteristics were similar between the 2 groups, except the number of AGMs, which was greater in group 2. The mean preoperative IOP for group 1 (phaco-microLOT) was 26.5 mmHg ± 5.2 and group 2 (phaco-alone group) was 25.3 mmHg ± 3.1 which decreased to 12.5 mmHg ±3.6 (<em>P</em> < 0.001) and 20.0 mmHg ± 2.7(<em>P</em> < 0.001) at 12 months, respectively. Logarithm of the minimum angle of resolution visual acuity improved from 0.48 (interquartile range [IQR], 0.30–0.60) preoperatively to 0.00 (0.00–0.18) postoperatively (<em>P</em> < 0001) in group 1 and improved from 0.30 (IQR, 0.30–0.48) to 0.00 (0.00–0.00) in group 2 (<em>P</em><span> < 0.001). In group 1, the mean (standard deviation [SD]) AGM used preoperatively was 0.6 (0.9) which was significantly reduced to 0.2 (0.5) at 12 months postoperatively, whereas in group 2, at 12 months, the mean (SD) AGM used was reduced from 1.4 (0.6) to 1.1 (0.9). In group 1, 90.3% of eyes achieved complete success at the end of 1 year. The most common complication was hyphema<span>, noted in 4 patients with 1 eye requiring an anterior chamber washout.</span></span></p></div><div><h3>Conclusion</h3><p>Ab interno microhook trabeculotomy (microLOT) combined with phacoemulsification in patients with open-angle glaucoma is an efficacious procedure with relatively minimal complications.</p></div><div><h3>Financial Disclosure(s)</h3><p>Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.</p></div>","PeriodicalId":19519,"journal":{"name":"Ophthalmology. Glaucoma","volume":"7 2","pages":"Pages 123-130"},"PeriodicalIF":2.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41241322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.1016/j.ogla.2023.09.001
Elyse J. McGlumphy MD , Anna Do MD , Amy Du MD , Earl Randy Craven MD , Lawrence S. Geyman MD , Leo Shen MS , Joel S. Schuman MD , Joseph F. Panarelli MD
Objective
To examine the longitudinal postoperative outcomes of open versus closed conjunctiva implantation of the XEN45 gel stent.
Design
Retrospective multicenter study.
Subjects
One hundred ninety-three patients with glaucoma underwent XEN45 implantation via an open or closed conjunctiva approach.
Methods
Data on patient demographics; diagnoses; preoperative and postoperative clinical data; outcome measures, including intraocular pressure (IOP); use of glaucoma medications; visual acuity; and complications were collected. Statistical analyses were performed with P < 0.05 as significant.
Main Outcome Measures
Failure was defined as < 20% reduction in IOP from the medicated baseline or a IOP of > 21 mmHg at 2 consecutive visits at postoperative month 1 and beyond, the need for subsequent operative intervention or additional glaucoma surgery, or a catastrophic event, such as loss of light perception. Eyes that had not failed by these criteria and were not on glaucoma medications were considered complete successes. Overall success was defined as those who achieved success either with or without topical medications.
Results
Patients were followed for an average of 17 months. Complete success was achieved in 42.5% and 24.7% of the open and closed groups, respectively (P = 0.01). Overall success was achieved in 64.2% and 37.0% of the open and closed groups, respectively (P < 0.001) at the last follow-up. Bleb needling was performed in 12.4% of eyes in the open group compared with 40% of eyes in the closed group. An IOP spike of ≥ 10 mmHg was twice as likely to occur in the closed group compared with the open group during the postoperative period (40% vs. 18%; P = 0.001).
Conclusions
Implantation of XEN45 with opening of the conjunctiva resulted in a lower IOP with greater success and lower needling rate compared with those achieved with the closed conjunctiva technique. Similar rates of postoperative complications and vision loss were noted in each group. Although both procedures provide substantial IOP reduction, the open technique appears to result in higher success rates and fewer postoperative interventions.
Financial Disclosure(s)
Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
{"title":"Interim Analysis of Clinical Outcomes with Open versus Closed Conjunctival Implantation of the XEN45 Gel Stent","authors":"Elyse J. McGlumphy MD , Anna Do MD , Amy Du MD , Earl Randy Craven MD , Lawrence S. Geyman MD , Leo Shen MS , Joel S. Schuman MD , Joseph F. Panarelli MD","doi":"10.1016/j.ogla.2023.09.001","DOIUrl":"10.1016/j.ogla.2023.09.001","url":null,"abstract":"<div><h3>Objective</h3><p>To examine the longitudinal postoperative outcomes of open versus closed conjunctiva implantation of the XEN45 gel stent.</p></div><div><h3>Design</h3><p>Retrospective multicenter study.</p></div><div><h3>Subjects</h3><p>One hundred ninety-three patients with glaucoma underwent XEN45 implantation via an open or closed conjunctiva approach.</p></div><div><h3>Methods</h3><p>Data on patient demographics; diagnoses; preoperative and postoperative clinical data; outcome measures, including intraocular pressure (IOP); use of glaucoma medications; visual acuity; and complications were collected. Statistical analyses were performed with <em>P</em> < 0.05 as significant.</p></div><div><h3>Main Outcome Measures</h3><p>Failure was defined as < 20% reduction in IOP from the medicated baseline or a IOP of > 21 mmHg at 2 consecutive visits at postoperative month 1 and beyond, the need for subsequent operative intervention or additional glaucoma surgery, or a catastrophic event, such as loss of light perception. Eyes that had not failed by these criteria and were not on glaucoma medications were considered complete successes. Overall success was defined as those who achieved success either with or without topical medications.</p></div><div><h3>Results</h3><p>Patients were followed for an average of 17 months. Complete success was achieved in 42.5% and 24.7% of the open and closed groups, respectively (<em>P</em> = 0.01). Overall success was achieved in 64.2% and 37.0% of the open and closed groups, respectively (<em>P</em> < 0.001) at the last follow-up. Bleb needling was performed in 12.4% of eyes in the open group compared with 40% of eyes in the closed group. An IOP spike of ≥ 10 mmHg was twice as likely to occur in the closed group compared with the open group during the postoperative period (40% vs. 18%; <em>P</em> = 0.001).</p></div><div><h3>Conclusions</h3><p>Implantation of XEN45 with opening of the conjunctiva resulted in a lower IOP with greater success and lower needling rate compared with those achieved with the closed conjunctiva technique. Similar rates of postoperative complications and vision loss were noted in each group. Although both procedures provide substantial IOP reduction, the open technique appears to result in higher success rates and fewer postoperative interventions.</p></div><div><h3>Financial Disclosure(s)</h3><p>Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.</p></div>","PeriodicalId":19519,"journal":{"name":"Ophthalmology. Glaucoma","volume":"7 2","pages":"Pages 116-122"},"PeriodicalIF":2.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589419623001734/pdfft?md5=ed2767a84264117df7947fbe896680d7&pid=1-s2.0-S2589419623001734-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10244542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.1016/j.ogla.2023.09.004
Alexandra G. Castillejos MD , Julia Devlin BS , Chhavi Saini MD , Jessica A. Sun BA , Mengyu Wang PhD , Grace Johnson BA , James Chodosh MD, MPH , Lucy Q. Shen MD
Purpose
To determine the clinical utility of OCT retinal nerve fiber layer (OCT RNFL) imaging for glaucoma evaluation in patients with Boston keratoprosthesis type 1 (KPro) by investigating imaging artifacts.
Design
Case-control study.
Subjects
Patients with KPro and without KPro (controls) matched for age, gender, and glaucoma diagnosis.
Methods
The most recent Cirrus OCT RNFL scan from 1 eye was categorized as having good signal strength (SS; ≥ 6 out of 10) or poor SS (< 6). Those with good SS were analyzed by 2 independent reviewers for artifacts. Images with good SS and no artifacts affecting the scanning circle were considered useful for glaucoma evaluation.
Main Outcome Measures
The incidence of poor SS and artifacts in OCT RNFL images; patient characteristics associated with useful scans.
Results
Sixty-five patients with KPro and 75 controls were included; 89.2% of KPro patients and 89.3% of control subjects had glaucoma (P = 0.98). Forty percent of KPro patients and 5.3% of controls had poor SS (P < 0.001). The proportion of images with either poor SS or artifacts was similar in KPro (76.9%) vs. controls (72.0%, P = 0.51). The most common artifacts in both groups were missing data (43.6%, 53.2%, respectively, P = 0.32) and motion artifact (25.6%, 19.7%, respectively, P = 0.47). Images were useful for glaucoma evaluation in 43.1% of KPro patients and in 69.3% of controls (P = 0.002). In the KPro group, patients with useful OCT scans, compared with those without, had better visual acuity (0.4 ± 0.3 vs. 0.9 ± 0.7 logarithm of the minimum angle of resolution, P = 0.004), and did not have congenital corneal pathologies (0.0% vs. 24.3%, P = 0.008). A multivariate analysis showed that KPro patients with older age had higher odds of useful OCT images (odds ratio, 1.05; P = 0.03). Among KPro patients with useful OCT scans, retinal nerve fiber layer thickness correlated with observed cup-to-disc ratio (Pearson correlation: r = −0.42, P = 0.03).
Conclusions
The rate of OCT RNFL images with either poor signal strength or artifacts in the KPro and control population was comparable. In patients with KPro, where intraocular pressure measurements are difficult and glaucoma is highly prevalent and often severe, OCT RNFL imaging can be useful for glaucoma evaluation.
Financial Disclosure(s)
Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
目的:通过研究成像伪影,确定光学相干断层扫描视网膜神经纤维层(OCT-RNFL)成像在波士顿1型角膜假体(KPro)患者青光眼评估中的临床应用。设计:病例对照研究。受试者:患有KPro和未患有KPro的患者(对照组)的年龄、性别和青光眼诊断相匹配。方法:一只眼睛最近的Cirrus OCT RNFL扫描被归类为信号强度良好(SS;≥6/10)或SS较差(主要结果指标:OCT RNFL图像中SS不良和伪影的发生率;与有用扫描相关的患者特征(p结论:在KPro和对照人群中,OCT RNFL图像信号强度差或伪影的发生率相当。在KPro患者中,眼压测量困难,青光眼非常普遍且往往很严重,OCT RN FL成像可用于青光眼评估。
{"title":"Artifacts in OCT Retinal Nerve Fiber Layer Imaging in Patients with Boston Keratoprosthesis Type 1","authors":"Alexandra G. Castillejos MD , Julia Devlin BS , Chhavi Saini MD , Jessica A. Sun BA , Mengyu Wang PhD , Grace Johnson BA , James Chodosh MD, MPH , Lucy Q. Shen MD","doi":"10.1016/j.ogla.2023.09.004","DOIUrl":"10.1016/j.ogla.2023.09.004","url":null,"abstract":"<div><h3>Purpose</h3><p><span>To determine the clinical utility of OCT<span> retinal nerve fiber layer (OCT RNFL) imaging for glaucoma evaluation </span></span>in patients<span> with Boston keratoprosthesis type 1 (KPro) by investigating imaging artifacts.</span></p></div><div><h3>Design</h3><p>Case-control study.</p></div><div><h3>Subjects</h3><p>Patients with KPro and without KPro (controls) matched for age, gender, and glaucoma diagnosis.</p></div><div><h3>Methods</h3><p>The most recent Cirrus OCT RNFL scan from 1 eye was categorized as having good signal strength (SS; ≥ 6 out of 10) or poor SS (< 6). Those with good SS were analyzed by 2 independent reviewers for artifacts. Images with good SS and no artifacts affecting the scanning circle were considered useful for glaucoma evaluation.</p></div><div><h3>Main Outcome Measures</h3><p>The incidence of poor SS and artifacts in OCT RNFL images; patient characteristics associated with useful scans.</p></div><div><h3>Results</h3><p>Sixty-five patients with KPro and 75 controls were included; 89.2% of KPro patients and 89.3% of control subjects had glaucoma (<em>P</em> = 0.98). Forty percent of KPro patients and 5.3% of controls had poor SS (<em>P</em> < 0.001). The proportion of images with either poor SS or artifacts was similar in KPro (76.9%) vs. controls (72.0%, <em>P</em> = 0.51). The most common artifacts in both groups were missing data (43.6%, 53.2%, respectively, <em>P</em> = 0.32) and motion artifact (25.6%, 19.7%, respectively, <em>P</em> = 0.47). Images were useful for glaucoma evaluation in 43.1% of KPro patients and in 69.3% of controls (<em>P</em><span> = 0.002). In the KPro group, patients with useful OCT scans, compared with those without, had better visual acuity (0.4 ± 0.3 vs. 0.9 ± 0.7 logarithm of the minimum angle of resolution, </span><em>P</em><span> = 0.004), and did not have congenital corneal pathologies (0.0% vs. 24.3%, </span><em>P</em><span> = 0.008). A multivariate analysis showed that KPro patients with older age had higher odds of useful OCT images (odds ratio, 1.05; </span><em>P</em> = 0.03). Among KPro patients with useful OCT scans, retinal nerve fiber layer thickness correlated with observed cup-to-disc ratio (Pearson correlation: <em>r</em> = −0.42, <em>P</em> = 0.03).</p></div><div><h3>Conclusions</h3><p>The rate of OCT RNFL images with either poor signal strength or artifacts in the KPro and control population was comparable. In patients with KPro, where intraocular pressure measurements are difficult and glaucoma is highly prevalent and often severe, OCT RNFL imaging can be useful for glaucoma evaluation.</p></div><div><h3>Financial Disclosure(s)</h3><p>Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.</p></div>","PeriodicalId":19519,"journal":{"name":"Ophthalmology. Glaucoma","volume":"7 2","pages":"Pages 206-215"},"PeriodicalIF":2.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41162586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.1016/j.ogla.2023.11.003
André S. Pollmann MD, FRCSC, Chloé Akl, Mona Harissi-Dagher MD, FRCSC
{"title":"Re: Castillejos et al.: Artifacts in OCT retinal nerve fiber layer imaging in patients with Boston Keratoprosthesis Type 1 (Ophthalmol Glaucoma. 2024;7:206-215)","authors":"André S. Pollmann MD, FRCSC, Chloé Akl, Mona Harissi-Dagher MD, FRCSC","doi":"10.1016/j.ogla.2023.11.003","DOIUrl":"10.1016/j.ogla.2023.11.003","url":null,"abstract":"","PeriodicalId":19519,"journal":{"name":"Ophthalmology. Glaucoma","volume":"7 2","pages":"Page 216"},"PeriodicalIF":2.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138813994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.1016/j.ogla.2023.08.003
Sahil Thakur MBBS, MS , Raghavan Lavanya MRCS , Marco Yu PhD , Yih-Chung Tham PhD , Zhi Da Soh BOptom, MPH , Zhen Ling Teo MBBS, MRCS , Victor Koh MBBS, MMed , Shivani Majithia OD , Chaoxu Qian MD, PhD , Tin Aung FRCSEd, PhD , Monisha E. Nongpiur MD, PhD , Ching-Yu Cheng MD, PhD
Objective
To determine the incidence and risk factors for primary open-angle glaucoma (POAG) and ocular hypertension (OHT) in a multiethnic Asian population.
Design
Population-based cohort study.
Participants
The Singapore Epidemiology of Eye Diseases study included 10 033 participants in the baseline examination between 2004 and 2011. Of those, 6762 (response rate = 78.8%) participated in the 6-year follow-up visit between 2011 and 2017.
Methods
Standardized examination and investigations were performed, including slit lamp biomicroscopy, intraocular pressure (IOP) measurement, pachymetry, gonioscopy, optic disc examination and static automated perimetry. Glaucoma was defined according to a combination of clinical evaluation, ocular imaging (fundus photo, visual field, and OCT) and criteria given by International Society of Geographical and Epidemiological Ophthalmology. OHT was defined on the basis of elevated IOP over the upper limit of normal; i.e., 20.4 mmHg, 21.5 mmHg, and 22.6 mmHg for the Chinese, Indian, and Malay cohort respectively, without glaucomatous optic disc change.
Main Outcome Measures
Incidence of POAG, OHT, and OHT progression.
Results
The overall 6-year age-adjusted incidences of POAG and OHT were 1.31% (95% confidence interval [CI], 1.04–1.62) and 0.47% (95% CI, 0.30–0.70). The rate of progression of baseline OHT to POAG at 6 years was 5.32%. Primary open-angle glaucoma incidence was similar (1.37%) in Chinese and Indians and lower (0.80%) in Malays. Malays had higher incidence (0.79%) of OHT than Indians (0.38%) and Chinese (0.37%). Baseline parameters associated with higher risk of POAG were older age (per decade: odds ratio [OR], 1.90; 95% CI, 1.54–2.35; P < 0.001), higher baseline IOP (per mmHg: OR, 1.20; 95% CI, 1.12–1.29; P < 0.001) and longer axial length (per mm: OR, 1.22; 95% CI, 1.07–1.40, P = 0.004).
Conclusion
Six-year incidence of POAG was 1.31% in a multiethnic Asian population. Older age, higher IOP, and longer axial length were associated with higher risk of POAG. These findings can help in future projections and guide public healthcare policy decisions for screening at-risk individuals.
Financial Disclosure(s)
The authors have no proprietary or commercial interest in any materials discussed in this article.
{"title":"Six-Year Incidence and Risk Factors for Primary Open-Angle Glaucoma and Ocular Hypertension","authors":"Sahil Thakur MBBS, MS , Raghavan Lavanya MRCS , Marco Yu PhD , Yih-Chung Tham PhD , Zhi Da Soh BOptom, MPH , Zhen Ling Teo MBBS, MRCS , Victor Koh MBBS, MMed , Shivani Majithia OD , Chaoxu Qian MD, PhD , Tin Aung FRCSEd, PhD , Monisha E. Nongpiur MD, PhD , Ching-Yu Cheng MD, PhD","doi":"10.1016/j.ogla.2023.08.003","DOIUrl":"10.1016/j.ogla.2023.08.003","url":null,"abstract":"<div><h3>Objective</h3><p>To determine the incidence and risk factors for primary open-angle glaucoma (POAG) and ocular hypertension (OHT) in a multiethnic Asian population.</p></div><div><h3>Design</h3><p>Population-based cohort study.</p></div><div><h3>Participants</h3><p>The Singapore Epidemiology of Eye Diseases study included 10 033 participants in the baseline examination between 2004 and 2011. Of those, 6762 (response rate = 78.8%) participated in the 6-year follow-up visit between 2011 and 2017.</p></div><div><h3>Methods</h3><p><span><span><span><span>Standardized examination and investigations were performed, including slit lamp biomicroscopy<span>, intraocular pressure (IOP) measurement, </span></span>pachymetry<span>, gonioscopy<span>, optic disc examination and static automated </span></span></span>perimetry. Glaucoma was defined according to a combination of </span>clinical evaluation, </span>ocular imaging<span> (fundus photo, visual field, and OCT) and criteria given by International Society of Geographical and Epidemiological Ophthalmology. OHT was defined on the basis of elevated IOP over the upper limit of normal; i.e., 20.4 mmHg, 21.5 mmHg, and 22.6 mmHg for the Chinese, Indian, and Malay cohort respectively, without glaucomatous optic disc change.</span></p></div><div><h3>Main Outcome Measures</h3><p>Incidence of POAG, OHT, and OHT progression.</p></div><div><h3>Results</h3><p>The overall 6-year age-adjusted incidences of POAG and OHT were 1.31% (95% confidence interval [CI], 1.04–1.62) and 0.47% (95% CI, 0.30–0.70). The rate of progression of baseline OHT to POAG at 6 years was 5.32%. Primary open-angle glaucoma incidence was similar (1.37%) in Chinese and Indians and lower (0.80%) in Malays. Malays had higher incidence (0.79%) of OHT than Indians (0.38%) and Chinese (0.37%). Baseline parameters associated with higher risk of POAG were older age (per decade: odds ratio [OR], 1.90; 95% CI, 1.54–2.35; <em>P</em> < 0.001), higher baseline IOP (per mmHg: OR, 1.20; 95% CI, 1.12–1.29; <em>P</em> < 0.001) and longer axial length (per mm: OR, 1.22; 95% CI, 1.07–1.40, <em>P</em> = 0.004).</p></div><div><h3>Conclusion</h3><p>Six-year incidence of POAG was 1.31% in a multiethnic Asian population. Older age, higher IOP, and longer axial length were associated with higher risk of POAG. These findings can help in future projections and guide public healthcare policy decisions for screening at-risk individuals.</p></div><div><h3>Financial Disclosure(s)</h3><p>The authors have no proprietary or commercial interest in any materials discussed in this article.</p></div>","PeriodicalId":19519,"journal":{"name":"Ophthalmology. Glaucoma","volume":"7 2","pages":"Pages 157-167"},"PeriodicalIF":2.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10295269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}