scholarly journals Optical coherence tomography angiography of the macular retina in primary angle closure glaucoma

2019 ◽  
Author(s):  
Yang Zhang ◽  
Shunhua Zhang ◽  
Chan Wu ◽  
Yao Zhang ◽  
Ailing Bian ◽  
...  
Keyword(s):  
Pearson Correlation ◽  
Angle Closure Glaucoma ◽  
Angle Closure ◽  
Control Group ◽  
Mean Deviation ◽  
Case Group ◽  
Ganglion Cell Complex ◽  
Fiber Layer ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma

Abstract Background: To detect the macular vessel density (MVD) changes in primary angle closure glaucoma (PACG) and to investigate the correlation between MVD and other glaucomatous changes. Methods: A case-control study. Eyes of 22 PACG patients with an episode of acute primary angle closure (APAC) in one of the two eyes. Structural OCT scans were used to obtain peripapillary retinal nerve fiber layer (RNFL), macular ganglion cell complex (GCC) thickness and C/D area ration. OCT angiography (OCTA) was used to measure MVD. Results: In the control group, the dense macular blood vessels were visible on OCTA， the macular vessels were sparse in the case group, and with an enlarged fovea avascular zone. There was a reduction in MVD in the case group compared with the controls (P<0.01). No correlations between MVD, VF mean deviation (MD), C/D area ratio, GCC thickness or RNFL thickness were found in the control group. In the case group, the Pearson correlation analysis showed that MVD was significantly correlated with BCVA (r=0,65, P=0.001), GCC (r=0.50, P=0.018) and VF MD (r=-0.54, P=0.009). In the case group, the multiple stepwise regression analysis, in which MVD were considered the dependent variables, showed that BCVA and GCC were significant predictors. Conclusions: Macular microvascular network attenuated and MVD reduced significantly caused by APAC. MVD was strongly linked to BCVA and GCC.

scholarly journals Development of a new algorithm for treatment of primary angle closure glaucoma

2018 ◽  
Vol 9 (2) ◽  
pp. 20-29
Author(s):  
N. I. Kurysheva ◽  
V. N. Trubilin ◽  
S. G. Kapkova ◽  
L. V. Lepeshkina
Keyword(s):  
Diabetes Mellitus ◽  
Corneal Endothelium ◽  
Angle Closure Glaucoma ◽  
Angle Closure ◽  
Control Group ◽  
Lens Thickness ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma ◽  
Pigment Deposition

Purpose – to develop a new algorithm for treatment of primary angle closure glaucoma (PACG) based on laser peripheral iridotomy (PI) and selective laser trabeculoplasty (SLT) and to determine its indications and contraindications. 68 eyes with PACG were observed for 6 years. These patients had undergone PI and then SLT. The control group included 74 POAG eyes of the same age and stage of glaucoma. The effectiveness of SLT was assessed using the Kaplan-Meier survival analysis. The risk factors for SLT failure in the long-term period were studied to determine the indications and contraindications for this treatment algorithm, and the condition of corneal endothelium in dynamics was investigated using confocal microscopy. The hypotensive effect of SLT in PACG was worse than in POAG: 90 and 93% respectively one year after SLT, and 16 and 21% six years after SLT (log rank test, p=0.195). The following factors of SLT failure were common for both forms of glaucoma: IOP >24 mm Hg, corneal thickness ≤540 µm, corneal hysteresis <7 mm Hg and age of patients >68 years. The extension of laser action <1800 and lens thickness >4.8 mm were additional predictors of SLT failure in PACG. In both forms of glaucoma, diabetes mellitus, age of patients and duration of the disease before SLT had a negative effect on the condition of corneal endothelium. The anterior-posterior axis and the presence of pigment deposition on the endothelium were significant in PACG. The proposed algorithm for PACG treatment, including the initial performance of PI and then SLT, is an effective method of treating this form of glaucoma, provided that the opening of the anterior chamber angle is sufficient (at least half) and the lens thickness is no more than 4.8 mm. The initially high IOP, the age of patients over 68 and a thin cornea (<540 μm) worsen the SLT prognosis. Moreover, diabetes mellitus and the presence of pigment deposition on the endothelium along with long-term glaucoma history increase the risk of corneal endothelium damage after SLT.

scholarly journals Normal Tension Primary Ppen-Angle Glaucoma with Progressive Synechial Angle Closure in Senior Chinese

2021 ◽  
Author(s):  
Zhigang Fan ◽  
Zhenni Zhao ◽  
Xiaowei Yu ◽  
Dandan Zhang ◽  
Nannan Sun ◽  
...  
Keyword(s):  
Anterior Chamber Depth ◽  
Normal Tension Glaucoma ◽  
Angle Closure ◽  
Mean Deviation ◽  
Glaucomatous Optic Neuropathy ◽  
Fiber Layer ◽  
Treatment Targets ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma ◽  
Senior Population

Abstract Background: This study is to address a unique subtype of combined-mechanism glaucoma (CMG), normal tension glaucoma (NTG) with progressive synechial angle closure in the Chinese senior population, whose clinical course and treatment targets are quite different from classic primary angle-closure glaucoma (PACG). Methods: In this retrospective study, 12 patients with NTG plus primary angle closure suspect or primary angle closure were included in the CMG group, and 12 classic PACG patients with matched extent of glaucomatous optic neuropathy (GON) were included in the control (PACG) group. Clinical features and detailed histories of disease development were investigated and compared between these two groups.Results: There were 6 females and 6 males in CMG group, 3 males and 9 females in PACG group. No statistical significances were found in age (63.42 ± 5.90 vs. 59.42 ± 7.47 years), preoperative intraocular pressure (20.75 ± 5.06 vs. 21.25 ± 4.47 mmHg), anterior chamber depth (ACD) (1.98 ± 0.28 vs. 1.94 ± 0.21mm), mean deviation of visual field (24.37 ± 6.54 vs. 22.01 ± 0.85 dB), average retinal nerve fiber layer thickness (48.00 ± 14.00 vs. 57.25 ± 14.10 μm), cup-to-disc (C/D) ratio (0.89 ± 0.07 vs. 0.87 ± 0.07) and axial length (22.69 ± 0.76 vs. 22.47 ± 0.69 mm) between the two groups (P > 0.05). The extent of synechial angle closure in PACG group was more extensive than that in CMG group, as evaluated by the number of “clock hours” (3.96 ± 1.14 vs. 9.38 ± 1.99, P < 0.05), although the severity of GON was comparable.Conclusion: If NTG develops with synechial angle closure, it might be misdiagnosed as PACG. We need to recognize and scrutinize this specific subtype of CMG, which is very common in the Chinese senior population, but widely neglected. In contrast to classic PACG, treatment targets in NTG with progressive synechial angle closure is primarily in consistent with those in NTG.

scholarly journals Long-Term Outcomes of Primary Trabeculectomy in Diabetic Patients without Retinopathy with Primary Angle-Closure Glaucoma

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Jian Liu ◽  
Miaomiao Zhang ◽  
Bin Li ◽  
Jianrong Wang
Keyword(s):  
Case Series ◽  
Angle Closure Glaucoma ◽  
Angle Closure ◽  
Control Group ◽  
Diabetic Patients ◽  
Surgical Success ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma

Purpose. To evaluate primary trabeculectomy with adjunctive mitomycin-C (MMC) in diabetic patients without retinopathy with primary angle-closure glaucoma (PACG). Design. This is a retrospective case series comparison. Participants. This retrospective trial compared outcomes of 88 eyes that underwent trabeculectomy in patients with diabetes mellitus (DM) without retinopathy and in 97 patients without DM. Methods. In this study, the intraocular pressure (IOP), visual acuity, visual field, and postoperative complications were compared between the two groups. Qualified surgical success is defined as an IOP between 6 and 18 mmHg with or without topical antiglaucoma medication. Results. After a follow-up of 5 years, the IOP decreased from a mean basal IOP of 27.8±7.3 mmHg to 15.0±5.6 mmHg in the DM group and from 27.3±6.0 mmHg to 12.4±5.3 mmHg in the control group. The mean number of antiglaucoma medications was 3.4±1.3 and 3.3±1.2 preoperatively (P=0.587) whereas it was 1.7±1.5 and 1.1±1.4 at the 5-year follow-up (P=0.049). The 5-year qualified surgical success rates were 42.9% and 65.4% for both groups (P=0.046; log-rank test). Encysted blebs were seen in 21 (23.9%) patients in the DM group and in 12 (12.4%) patients in the control group (P=0.041). Conclusion. PACG patients with DM without retinopathy undergoing primary trabeculectomy with MMC may have a lower long-term surgical survival rate compared with patients without DM.

scholarly journals Features Local Interlacing Status of Elderly Patients with Primary Angle-Closure Glaucoma

2021 ◽  
Vol 18 (1) ◽  
pp. 123-128
Author(s):  
A. M. Chukhraev ◽  
N. M. Agarkov ◽  
K. I. Proschayev ◽  
A. N. Ilnitskiy ◽  
A. S. Kulabukhov ◽  
...  
Keyword(s):  
Elderly Patients ◽  
Local Level ◽  
The Elderly ◽  
Angle Closure Glaucoma ◽  
Angle Closure ◽  
Control Group ◽  
Ophthalmological Examination ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma ◽  
Anti Inflammatory

An increased share of the elderly in the structure of modern society, along with other causes and risk factors, is accompanied by the growing the incidence of glaucoma. According to international research in the world by 2020 it is predicted that glaucoma patients will increase to 80 million. Among the elderly, glaucoma is a common pathology, the development of which is associated with local disorders of the interleukin profile. However, the features of the latter in patients with primary closed-angle glaucoma in the elderly have not been studied. The purpose of this work is to identify the features and informativeness of local interleukin profile indicators in elderly patients with primary angle — closure glaucoma. The study included 58 patients with primary angle-closure glaucoma of stage II, who made up the main group, aged 60–74 years with a median of 70.1 ± 2.5 years. All patients underwent a comprehensive ophthalmological examination. The diagnosis of primary angle-closure glaucoma was established in accordance with the requirements of the National glaucoma guidelines. The control group consisted of 27 elderly people aged 60 to 74 years with a median of 68.7 ± 2.1 years without signs and manifestations of primary angle-closure glaucoma, who also underwent a comprehensive ophthalmological examination. Changes in proinflammatory interleukins at the local level in the development of primary angle-closure glaucoma are accompanied by a significant increase in their content in all cases. On the contrary, changes in anti-inflammatory interleukins in the lacrimal fluid in patients with the considered ophthalmological pathology are characterized by a significant inhibition of their production. IL-10 are characterized by the most significant decrease at the local level and it is less related to IL-4. Local interlacing profile of patients with primary angle-closure glaucoma elderly are characterized by increased level in the tear fluid of anti-inflammatory IL-2, IL-17, IL-8 and lower production of anti-inflammatory IL-10. These local interleukins have the greatest informative value, which is of scientific and practical significance for identifying new mechanisms of development, diagnostics and justification of selective immunotropic therapy of the pathology in question.

scholarly journals Cyclophotocoagulation under Microscopy Combined with Phacoemulsification for Primary Angle-Closure Glaucoma

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Xiaoli Xiang ◽  
Haiying Chen ◽  
Jian Li ◽  
Pan Xiao ◽  
Wei Zhu ◽  
...  
Keyword(s):  
Angle Closure Glaucoma ◽  
Direct Vision ◽  
Angle Closure ◽  
Fiber Layer ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma ◽  
Nerve Fiber Layer Thickness ◽  
Postoperative Changes ◽  
Additional Surgery ◽  
The Mean

The purpose of this study was to evaluate the safety and efficacy of cyclophotocoagulation under microscopy combined with phacoemulsification in patients with primary chronic angle-closure glaucoma. We retrospectively reviewed the results of cyclophotocoagulation under microscopic direct vision combined with phacoemulsification in 35 eyes (35 patients) with primary chronic angle-closure glaucoma and coexisting visually significant cataracts, treated between January 2017 and April 2020 at the glaucoma unit of the affiliated Changshu Hospital of Xuzhou Medical University. All patients were followed up for at least 12 months postoperatively. The preoperative to postoperative changes in best-corrected visual acuity (BCVA), intraocular pressure (IOP), number of antiglaucoma medications, and surgery-associated complications were recorded. The BCVA improved from 1.15 ± 0.91 logMAR preoperatively to 0.86 ± 0.82 logMAR at the final postoperative examination (Z = −3.62, P < 0.0001 ). The mean IOP was 36.63 ± 13.50 mmHg preoperatively and 15.14 ± 3.19 mmHg at the final examination (Z = −5.16, P < 0.0001 ). The number of antiglaucoma drugs was significantly reduced from 2.23 ± 0.55 preoperatively to 0.54 ± 0.86 at the final postoperative examination (Z = −5.26, P < 0.0001 ). The absolute value of the mean defect and retinal nerve fiber layer thickness at the last follow-up postoperatively were significantly reduced compared to preoperative values (Z = −3.35, P = 0.001 ; Z = −4.56, P < 0.001 , respectively). One patient experienced an explosive suprachoroidal hemorrhage during the operation. The sclera was incised at the corresponding site of the intraoperative hemorrhage. The operation was continued once there was no active bleeding, and the outcome was satisfactory. None of the patients required additional surgery to treat complications. Thus, cyclophotocoagulation under microscopic direct vision combined with phacoemulsification can be performed safely for the management of primary angle-closure glaucoma.

scholarly journals Association between axial length of the eye and primary angle closure glaucoma

1970 ◽  
Vol 6 (3) ◽  
pp. 361-363 ◽  
Author(s):  
D Sherpa ◽  
BP Badhu
Keyword(s):  
Risk Factor ◽  
Axial Length ◽  
Simple Random Sampling ◽  
Normal Subjects ◽  
Angle Closure Glaucoma ◽  
Angle Closure ◽  
Control Group ◽  
Cross Sectional ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma

Background: Angle closure glaucoma is emerging as a leading cause of blindness in Asia. Objective: To compare the ocular axial length of normal individuals and the subjects with primary angle closure glaucoma. This study has been conducted to determine axial length of eye as a risk factor of primary angle closure glaucoma. Materials and Methods: A cross-sectional comparative study was carried out in Mechi Eye Care Centre, Jhapa, Nepal including forty eyes of 20 diagnosed cases of primary angle closure glaucoma (40 eyes) and 40 eyes of 20 normal subjects selected by simple random sampling. A complete ocular examination of all the subjects was carried out. Axial length measurement was done using ultrasound A scan. Results: Out of 80 eyes, there were 40 eyes of 20 diagnosed primary angle closure subjects and 40 eyes of 20 normal subjects. The mean axial length and standard deviation of primary angle closure glaucoma were 21.93 ± 1.16 mm (95% CI = 21.41 - 22.45) and those of control group were 23.01 ± 0.49 (95% CI = 22.79 - 23.23). The axial length of less than 23 mm was found as a risk factor for angle closure glaucoma (Relative risk =3.40; p = 0.0032). Conclusion: This study showed that patients with the axial length of less than 23 mm are at risk to develop primary angle closure glaucoma. This result can be confirmed by doing population based study in a larger sample size. Keywords: Axial length, Primary angle closure glaucoma, Nepal doi: 10.3126/kumj.v6i3.1712 Kathmandu University Medical Journal (2008), Vol. 6, No. 3, Issue 23, 361-363

scholarly journals Correlation between Intraocular Pressure and Visual Field Loss in Primary Open Angle and Primary Angle Closure Glaucoma: A Cross-Sectional Study

2021 ◽  
Author(s):  
VR Raji ◽  
Susan Philip ◽  
Ambily S
Keyword(s):  
Intraocular Pressure ◽  
Visual Field ◽  
Pearson Correlation ◽  
Visual Field Loss ◽  
Angle Closure Glaucoma ◽  
Angle Closure ◽  
Open Angle ◽  
Cross Sectional ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma

Introduction: Glaucoma is characterised by structural damage to optic nerve head with corresponding visual field defects and often associated with increased Intraocular Pressure (IOP). It may be broadly classified as Primary Angle Closure Glaucoma (PACG) and Primary Open Angle Glaucoma (POAG). It is one of the leading causes of global blindness, and a major proportion occurs in Indian population. Aim: To study the correlation between pretreatment IOP and extent of visual field loss in PACG and POAG. Materials and Methods: A cross-sectional observational study was carried out in Regional Institute of Ophthalmology, Trivandrum, Kerala, India from April 2016 to May 2017. Newly diagnosed cases of PACG (25 patients-13 males, 12 females, mean age 58.72±10.07 years) and POAG (85 patients- 45 males, 40 females, mean age 60.28±10.42 years) underwent a detailed glaucoma evaluation which included IOP measurement with Goldmann applanation tonometer and visual field testing using Humphrey Field Analysis (HFA) 24-2 pattern. Mean Deviation (MD), Pattern Standard Deviation (PSD) and Advanced Glaucoma Intervention Score (AGIS) score was calculated from reliable visual field test result. All data were coded and entered in to statistical software, Statistical Package for Social Sciences (SPSS) version 16.0 for analysis. The correlation between pretreatment IOP and visual field loss in patients with PACG and POAG was determined by Pearson Correlation of Coefficient. Results: Amongst the total 110 patients of this study, 25 patients were of PACG while POAG were in 85 patients. A significant correlation between pre treatment IOP and the extent of visual field loss in PACG was noted. There was no significant correlation in POAG. Linear regression analysis demonstrated a significant positive correlation between IOP and AGIS score in PACG (Pearson correlation coefficient(r)=0.805, p<0.001), not in POAG (r=0.026, p=0.816). Correlation between IOP and MD is statistically significant in PACG (r=0.812, p<0.001) but not in POAG (r=0.058, p=0.597). The correlation between IOP and PSD is not statistically significant in both groups (p-value >0.450). Conclusion: A significant correlation between IOP and visual field loss in PACG indicates that extent of visual field damage can be controlled by controlling IOP alone in PACG. The correlation between the pretreatment IOP and visual field loss in POAG is not statistically significant which agrees with the current proposed pathophysiology of optic neuropathy in which multiple factors influence in addition to IOP.

scholarly journals Asymmetric Patterns of Visual Field Loss in Primary Angle Closure Glaucoma, High Tension Glaucoma, and Normal Tension Glaucoma

2021 ◽  
Author(s):  
Junhong Jiang ◽  
Cong Ye ◽  
Cong Zhang ◽  
Wenqing Ye ◽  
Xiaoyan Wang ◽  
...  
Keyword(s):  
Central Region ◽  
Early Stage ◽  
Normal Tension Glaucoma ◽  
Angle Closure Glaucoma ◽  
Angle Closure ◽  
Mean Deviation ◽  
Automated Perimetry ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma ◽  
High Tension

Abstract The data directly comparing the spatial pattern of VF defects between primary angle-closure glaucoma (PACG), high-tension glaucoma (HTG) and normal-tension glaucoma (NTG) is not available. We aim to compare the asymmetric patterns of VF defects in patients with PACG, NTG and HTG across different severity levels. A total of 162 eyes of 114 patients with PACG, 111 eyes of 74 patients with HTG and 148 eyes of 102 patients with NTG were included. VF examinations were performed with standard automated perimetry (HFA, SITA-standard strategy, 24-2), and defects were categorized into 3 stages (early, moderate, and advanced) and each hemifield was divided into 5 regions according to Glaucoma Hemifield Test (GHT). The mean total deviation (TD) of each GHT region was calculated. The relationship between the values of pattern standard deviation (PSD) and mean TD was assessed. In the early stage, nasal region of PACG, central region of HTG and all five regions of NTG in the superior hemifield had significantly worse mean TD than their counterparts in the inferior hemifield. In the moderate stage, three regions of NTG in the superior hemifield had significantly worse mean TD than their inferior counterparts. In the advanced stage, central region of PACG, and central and paracentral regions of HTG in the superior hemifield had significantly worse mean TD than their inferior counterparts. When participants were matched by age, sex and mean deviation, in PACG and HTG eyes, all 5 GHT regions in the superior hemifield had worse mean TD than that that of their inferior-hemifield counterparts; however, the differences were not statistically significant. In NTG eyes, the paracentral, nasal, arcuate 1 and arcuate 2 regions in the superior hemifield had significantly worse mean TDs than their inferior counterparts. The superior hemifield is affected more severely than the inferior hemifield in all 3 subtypes of primary glaucoma. This asymmetric tendency was more pronounced in NTG compared to PACG and HTG.

scholarly journals Optical coherence tomography angiography of the macula in patients with primary angle closure glaucoma

2020 ◽  
Author(s):  
Yang Zhang ◽  
Shunhua Zhang ◽  
Chan Wu ◽  
Yao Zhang ◽  
Ailing Bian ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Angle Closure Glaucoma ◽  
Angle Closure ◽  
Case Group ◽  
Optical Coherence ◽  
Microvascular Network ◽  
Mixed Effect ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma ◽  
Retinal Microvasculature

Backgroud: The retinal microvasculature within the macula in glaucomatous eyes is not clear. Objectives: To detect macular vessel density (MVD) changes in primary angle closure glaucoma (PACG). Methods: 22 PACG patients who had an episode of acute primary angle closure were included. Structural optical coherence tomography (OCT) scans were conducted to measure the thickness of the peripapillary retinal nerve fiber layer and macular ganglion cell complex (GCC). The MVD was measured with OCT angiography. Results: A weakened macular microvascular network that had an expanded fovea avascular zone was observed in the case group. Compared with the control group, the case group had a lower MVD (P < 0.001). Single correlation analysis revealed a significant correlation of the MVD with best-corrected visual acuity （BCVA） (r = -0, 65, P = 0.001), GCC (r = 0.50, P = 0.018), and the visual field mean deviation (r = -0.54, P= 0.009) in the case group. Moreover, in the mixed-effect models, the MVD was found to be positively correlated with GCC (P= 0.017), and negatively correlated with LogMar BCVA (P < 0.001). Conclusions: After an acute angle closure attack, the macular microvascular network is attenuated, and the MVD decreases significantly.

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