Contribution at the Study of Neuroprotective Properties of Neuroglobin during Severe Chronic Glaucoma

Introduction: The mechanisms of overexpression of neuroglobin in patients with severe glaucoma (CG+) remain hypothetical. Objective: To study the anti-apoptotic, anti-hypoxic and anti-oxidant properties of neuroglobin in CG+. Population and Methods: The visual field, as well as plasma dosage of neuroglobin (CmNgb, ng/ml), hypoxia inductible factor-1alpha (CmHIF-1α, pg/ml), glutathione peroxidase (CmGpx, pg/ml), and cytochrome C oxidase (CmCyt C, pg/ml) were carried out in 45 CG+ and 45 controls (CG-). The chi-2 test compared the proportions, and Spearman’s test studied the correlations between quantitative variables (p Results: CmNgb was 4.1 in CG+, versus 2.3 in CG- (p = 1.52 × 10-5). CmGpx was 1144.7 in CG+, versus 752.8 in GC- (p = 0.0199). CmHIF-1α was 4.1 in CG+, versus 3.5 in CG- (p = 0.4530). CmCyt C was 2303.26 in CG+, versus 1750.44 in CG- (p = 0.0450). In CG+, there was a correlation between CmNgb and CmGpx (r = 0.417;p = 0.004), CmNgb and CmHIF-1α (r = 0.644;p = 1.8 × 10-6), and between CmHIF-1α and CmGpx (r = 0.447;p = 0.002), CmHIF-1α and CmCyt C (r = 0.371;p = 0.012). None correlation was found between CmNgb and CmCyt C (r = 0.126;p = 0.370), as well as CmGpx and CmCyt C (r = 0.102;p = 0.505). Conclusion: The variations of apoptosis, hypoxic, and oxidative stress biomarkers were found between CG+ and CG-, as well as their correlations, suggesting that neuroglobin overexpression is related to its anti-apoptotic, anti-oxidative, and anti-hypoxic properties.

Effect of low dose laser cycloplasty on deepening anterior chamber in chronic angle-closure glaucoma

AIM:To describe the outcome of using low-dose laser cycloplasty(LCP)in chronic angle-closure glaucoma(CACG).METHODS:A retrospective case series.Medical charts of CACG patients who underwent LCP in the Eye Hospital of Wenzhou Medical University were reviewed.The main outcomes included intraocular pressure(IOP),the number of glaucoma medication,anterior segment parameters and surgery-related complications.RESULTS:A total of 7 eyes of 7 CACG patients(age 38.9±11.0y)underwent LCP with a mean follow-up of 27.1±13.7mo(range 16-48mo).Following LCP,mean IOP and glaucoma medications decreased from 26.1±6.1 mm Hg with 3.1±1.1 glaucoma medications pre-treatment to 14.9±3.1 mm Hg(P=0.027)with 0.4±1.1 glaucoma medications(P=0.001)at final follow-up.The anterior chamber depth(ACD),angle opening distance500 and trabecular-iris angle increased from 1.65±0.33 mm,0.05 mm(range 0-0.30 mm)and 5.1°(range,0-31.97°)at baseline to 1.98±0.43 mm(P=0.073),0.53 mm(range 0.42-0.91 mm,P=0.015),45.9°(range,40.2°-59.4°),(P=0.015)in the long-term follow-up,respectively.The deepening of ACD and reopening of anterior chamber angle(ACA)was observed in 6 eyes(85.7%).CONCLUSION:LCP is a promising treatment option for patients with CACG via reducing IOP and glaucoma medication without serious complications.In addition,LCP can bring a significant deepening in ACD and reopening of ACA.

Three-dimensional choroidal vascularity index and choroidal thickness in fellow eyes of acute and chronic primary angle-closure using swept-source optical coherence tomography

AIM:To compare the three-dimensional choroidal vascularity index(CVI)and choroidal thickness between fellow eyes of acute primary angle-closure(F-APAC)and chronic primary angle-closure glaucoma(F-CPACG)and the eyes of normal controls.METHODS:This study included 37 patients with unilateral APAC,37 with asymmetric CPACG without prior treatment,and 36 healthy participants.Using swept-source optical coherence tomography(SS-OCT),the macular and peripapillary choroidal thickness and three-dimensional CVI were measured and compared globally and sectorally.Pearson’s correlation analysis and multivariate regression models were used to evaluate choroidal thickness or CVI with related factors.RESULTS:The mean subfoveal CVIs were 0.35±0.10,0.33±0.09,and 0.29±0.04,and the mean subfoveal choroidal thickness were 315.62±52.92,306.22±59.29,and 262.69±45.55μm in the F-APAC,F-CPACG,and normal groups,respectively.All macular sectors showed significantly higher CVIs and choroidal thickness in the F-APAC and F-CPACG eyes than in the normal eyes(P<0.05),while there were no significant differences between the F-APAC and F-CPACG eyes.In the peripapillary region,the mean overall CVIs were 0.21±0.08,0.20±0.08,and 0.19±0.05,and the mean overall choroidal thickness were 180.45±54.18,174.82±50.67,and 176.18±37.94μm in the F-APAC,F-CPACG,and normal groups,respectively.There were no significant differences between any of the two groups in all peripapillary sectors.Younger age,shorter axial length,and the F-APAC or F-CPACG diagnosis were significantly associated with higher subfoveal CVI and thicker subfoveal choroidal thickness(P<0.05).CONCLUSION:The fellow eyes of unilateral APAC or asymmetric CPACG have higher macular CVI and choroidal thickness than those of the normal controls.Neither CVI nor choroidal thickness can distinguish between eyes predisposed to APAC or CPACG.A thicker choroid with a higher vascular volume may play a role in the pathogenesis of primary angle-closure glaucoma.

Neuroprotective effect of mesenchymal stem cellderived extracellular vesicles on optic nerve injury in chronic ocular hypertension

Mesenchymal stem cells have neuroprotective effects that limit damage to the retina and photoreceptors,and which may be mediated by extracellular vesicles(or exosomes)released by mesenchymal stem cells.To investigate the neuroprotective effect of extracellular vesicles derived from umbilical cord mesenchymal stem cells on glaucoma,we established rat models of chronic ocular hypertension by injecting conjunctival fibroblasts into the anterior chamber to mimic optic nerve injury caused by glaucoma.One week after injury,extracellular vesicles derived from umbilical cord-derived mesenchymal stem cells were injected into the vitreous cavity.We found that extracellular vesicles derived from mesenchymal stem cells substantially reduced retinal damage,increased the number of retinal ganglion cells,and inhibited the activation of caspase-3.These findings suggest that mesenchymal stem cell-derived extracellular vesicles can help alleviate optic nerve injury caused by chronic ocular hypertension,and this effect is achieved by inhibiting cell apoptosis.

Outcomes of chronic angle-closure glaucoma treated by phacoemulsification and endocyclophotocoagulation with or without endoscopically goniosynechialysis

AIM:To investigate the surgical outcomes of patients with chronic angle-closure glaucoma(CACG)treated with phacoemulsification(phaco)/endocyclophotocoagulation(ECP)with and without endoscopic goniosynechialysis(E-GSL).METHODS:A retrospective,nonrandomized,comparative case series was conducted.Patients with CACG who underwent phaco in combination with either ECP alone(ECP group)or GSL with ECP(E-GSL group)from 2018 to 2019 were followed for 12mo and reviewed.Clinical features and outcomes were identified and analyzed.The ECP and E-GSL groups were matched in age and baseline intraocular pressure(IOP).Changes in IOP,mean of visual acuity(VA),peripheral anterior synechiae(PAS)formation,and the number of glaucoma medications was examined.RESULTS:The ECP group included 32 eyes of 27 patients,and the E-GSL group included 32 eyes of 26 patients.The preoperative baseline IOP was 22.18±6.48 mm Hg in the ECP group and 22.95±6.71 mm Hg in the E-GSL group(P=0.644).The mean IOP reduction was 26.2%in the ECP group and 41.6%in the E-GSL group at 12mo.The mean postoperative VA(log MAR units)at 12mo was 0.47 in the ECP group and 0.36 in the E-GSL group.The reduction in PAS formation and the number of glaucoma medications was also higher in the ECP group than E-GSL group at 12mo.CONCLUSION:The phaco/ECP and phaco/E-GSL groups both achieve a significant reduction in IOP without complications associated with traditional glaucoma filtration surgeries.

Comparison of phacotrabeculectomy and sequential surgery in the treatment of chronic angle-closure glaucoma coexisted with cataract

AIM： To compare the safety and effectiveness of phacotrabeculectomy versus sequential surgery in chronic angle-closure glaucoma（CACG） with coexisting cataract.·METHODS： One hundred and sixty-two CACG patients（162 eyes） were retrospectively analyzed. Of them, 87patients（87 eyes） in group A had underwent phacotrabeculectomy with intraocular lens（IOL）implantation, and 75 patients（75 eyes） in group B had underwent sequential surgery with IOL implanted. Best-corrected visual acuity（BCVA）, intraocular pressure（IOP）, complications and anterior chamber angle（ACA）were measured.· RESULTS： Demographic characteristics of the two groups were similar. A mean follow-up period was 15±6mo（range 13 to 24mo）, a mean IOP of 12.14 ±5.32 mm Hg in group A and 11.38 ±4.06 mm Hg in group B（P =0.84） at the last follow up. The Kaplan-Meier analysis revealed that the cumulative probability of success in both groups was similar（P =0.61）. Anterior uveitis and hypotony were the most common complications in group A, whereas group B experienced shallow anterior chamber with trabeculectomy. With the exception of anterior uveitis, no complications occurred to 11 trabeculectomized eyes. All postoperative measurements of anterior chamber showed statistically significant differences in each group according to the preoperative data（P〈 0.05）. However,fewer changes occurred in group B than in group A.· CONCLUSION： Phacotrabeculectomy and sequential surgery exhibit similar IOP reduction, visual recovery,and complications when treating CACG patients with cataract. However, for a wider ACA, phacotrabeculectomy has demonstrated higher effectiveness than sequential surgery.

Diffusion tensor imaging of optic nerve and optic radiation in primary chronic angle-closure glaucoma using 3T magnetic resonance imaging

AIM: To evaluate the value of quantitative diffusion tensor imaging (DTI) in assessing the axonal and myelin damage of the optic nerves and optic radiations in patients with chronic primary angle -closure glaucoma (PACG) by using high -field magnetic resonance (MR) imaging (3T). METHODS: Twenty patients with bilateral chronic PACG and twenty age - and sex matched disease -free control subjects were enrolled. Conventional MRI and DTI were performed on all subjects using 3T MR scanner. Mean diffusivity (MD), fractional anisotropy (FA), axial diffusivities (AD) and radial diffusivities (RD) of each optic nerve and each optic radiation were measured by using post -processing software of DTI studio 2.3, and then compared between left eyes and right eyes and between patients group and control group. The pairedsample t- test were used. RESULTS: There was no abnormality in the shape and signal intensity of the optic nerves and optic radiations in patients group and control group on the conventional MRI. No significant differences were observed in the FA, MD, AD and RD between the right and left optic nerves and optic radiations within patients group and control group (P>0.05). The optic nerves and optic radiations of patients with chronic PACG, as compared with control subjects, had significantly higher MD, AD, RD and significantly lower FA (P<0.05). CONCLUSION: The diffusivity of optic nerves and optic radiations in chronic PACG group showed abnormal and diffusivity parameters could be used markers of axonal and myelin injury in glaucoma.

Primary Chronic Angle-closure Glaucoma in Chinese——A Clinical Exploration of Its Pathogenesis And Natural Course

Fourty-three cases (86 eyes) of primary chronic angle-closure glaucoma were randomly selected. An additional 44 cases (77 eyes) of primary acute angle-closure glaucoma and 30 normal subjects (34 eyes) were also randomly enrolled as control groups for comparison in the clinical study. Ultrasonic biometric measurements of the anterior chamber depth, lens thickness and axial length of the eyeball were performed. Using an potic microgauge attached to the slit-lamp, the entrance of anterior chamber angle was...

The safety and efficacy of modified minimally invasive trabeculectomy for the treatment of primary chronic angle-closure glaucoma

Background: Primary chronic angle-closure glaucoma(PCACG) is one of the main types of glaucoma in China. Trabeculectomy is the most commonly used glaucoma filtration surgery for glaucoma in the world. Conventional trabeculectomy is prone to anesthesia-related complications intraoperative and operationrelated complications postoperative in PCACG treatment. Modified minimally invasive trabeculectomy maybe can reduce the incidence of complications.Methods: We conducted a prospective case series study and performed modified fornix-based trabeculectomy in 27 patients(30 eyes) under topical anesthesia; we then observed intraoperative anesthesia and cooperation ef ect, intraoperative and postoperative complications, preoperative and postoperative visual acuity, intraocular pressure(IOP), visual field, and the use of ocular hypotensive drugs. The patients were followed up for at least 12 months.Results: All operations were completed successfully with no intraoperative complications. All 27 patients(30 eyes) were followed up for at least 12 months. No significant decrease in visual acuity was observed at days 1 or 7 and at months 1, 3, 6, and 12 after operation; however, a signii cant decrease in IOP was observed at days 1 and 7 and at months 1, 3, 6, and 12 after operation. Moreover, no significant progression in visual field mean defect was observed at month 12 after operation, and the number of ocular hypotensive drugs required was significantly reduced at months 6 and 12 after operation. By month 12 after operation, the overall success rate was 93.33%(28/30).Conclusions: Modii ed minimally invasive trabeculectomy is safe and ef ective for the treatment of PCACG.

Post-miosis changes in the anterior chamber structures in primary and lens-induced secondary chronic angle-closure glaucoma

To evaluate post-miosis changes in the anterior chamber structures in various angle-closure glaucomas(ACG). Totally 14 eyes of primary chronic angle-closure glaucoma(PCACG), 12 eyes of lens-induced secondary chronic angleclosure glaucoma(LSACG) and 14 healthy eyes were recruited. After miosis, for PCACG group, intraocular pressure(IOP) and anterior chamber depth(ACD) changed not significantly, while anterior chamber angle widened significantly. LSACG group showed a significant increase in IOP, decrease in ACD, and narrowing in anterior chamber angle. Healthy eyes showed significant decreases in IOP and anterior chamber parameters. Thus, miosis could widen the anterior chamber angle of patients with PCACG, while increase the narrowing of anterior chamber angle and IOP of patients with LSACG. We should pay attention to the distinction between PCACG and LSACG patients and the proper administration of pilocarpine in the treatment of patients with chronic ACG.

Indicating and predicting role of the horizontal C/D ratio in preclinical diabetic retinopathy associated with chronic angle-closure glaucoma

AIM: To observe morphological optic disc characteristics in patients with preclinical diabetic retinopathy(DR) associated with chronic angle-closure glaucoma(CACG). METHODS: Twenty-two cases(43 eyes) of preclinical DR associated with CACG were enrolled in group A; 24 preclinical DR cases(46 eyes) were enrolled in group B; 26 CACG cases(51 eyes) were enrolled in group C; and 49 normal controls(49 eyes) were enrolled in group D. All underwent optical coherence tomography to measure the horizontal C/D ratio(HCDR), C/D area ratio(CDaR), vertical C/D ratio(VCDR), rim area(RA), cup volume(CV), disc area(DA) and average retinal nerve fiber layer(RNFL) thickness. RESULTS: The ages of groups A, B, C, and D were 67.60±3.36, 66.78±3.33, 65.98±3.83, and 67.54±3.17 y, respectively. The HCDR values in groups A, B, and C were distinct relative to those in group D(P<0.0001, P<0.01, and P<0.05, respectively). The HCDR values in group A were higher compared with those in groups B(P<0.0001) and D(P<0.0001); while these values were virtually identical statistically between groups A and C(P>0.05). The CDaR values in group A were higher in comparison to those in groups B and D(P<0.0001 in both groups); while these values were virtually identical statistically between groups A and C(P>0.05). The RA values in group A were smaller relative to those in groups B and D(P<0.0001 in both groups); while groups A and C were not distinct statistically(P>0.05). The CV values in group A were greater in comparison to those in groups B and D(P<0.0001 in both groups); while groups A and C were not distinct statistically(P>0.05). DA was not distinct for comparisons of two groups among the four groups(P>0.05). HCDR value correlated with mean nasal RNFL thickness(r=-0.909,P<0.0001), mean superior RNFL thickness(r=-0.866, P<0.0001), mean inferior RNFL thickness(r=-0.650, P<0.001) and mean temporal RNFL thickness(r=-0.562, P<0.01) in group A. CONCLUSION: The HCDR was a sensitive morphological parameter in detecting structural visual disc changes in preclinical DR associated with CACG, which can reflect optic nerve damage caused jointly by CACG and diabetes. A higher HCDR may predict optic nerve atrophy.

环角膜缘缝合与激光光凝模型:两种慢性高眼压模型的比较

目的:青光眼是一种多因素相关的视神经病变,致盲率高,其发病机制复杂,目前尚未明确。高眼压是目前唯一可调控的、与青光眼的发病密切相关的危险因素。本研究通过运用环角膜缘缝合与小梁网联合巩膜静脉激光光凝2种不同的方法建立慢性高眼压大鼠模型,比较2种模型的眼压升高程度和高眼压持续时间,视网膜形态损伤和视网膜神经节细胞(retinal ganglion cells,RGCs)损伤程度,以及超微结构改变等。方法:建立2种慢性高眼压模型,分为环角膜缘缝合组(缝合组,用10/0尼龙线沿角巩膜缘缝合)和激光光凝组(激光组,激光灼烧小梁网联合巩膜外静脉),并以其对侧眼作为对照组。观察并定期规律监测2组大鼠的眼压变化。采用大鼠视网膜切片HE染色观察2种慢性高眼压模型对视网膜和视神经病理学的影响,透射电镜(transmission electron microscope,TEM)观察慢性高眼压模型超微结构中线粒体形态的变化,大鼠视网膜铺片Brn3b抗体免疫荧光染色特异性标记RGCs并计数,蛋白质印迹法检测凋亡相关蛋白caspase-3的表达以明确RGCs的凋亡情况。结果:与对照组相比,缝合组与激光组大鼠眼压均明显升高(均P<0.05),其中缝合组的眼压最高升高1.5倍,眼压显著升高持续8周;激光组的眼压最高达对照组的2倍,持续12周。2组都会导致RGCs丢失,与Brn3b染色的结果相符,2组caspase-3表达水平均升高(均P<0.05)。而在TEM下,2组RGCs中的线粒体形态均变为碎片化,从正常的长条形变小、变圆。与激光组相比,缝合组视网膜形态学的病理变化较轻微。结论:环角膜缘缝合可建立有效的慢性高眼压模型,诱导与激光光凝模型相似的青光眼性病理改变,但病理改变较激光光凝轻微。相较于激光光凝建模,环角膜缘缝合法对于设备要求和操作能力要求更低。

EFFECTS OF TETRAMETHYLPYRAZINE ON RETINA OF RABBITS WITH EXPERIMENTAL GLAUCOMA

Objective To observe the effects or the ramethylpyrazine (TMP ) on ret Ina to find o ut whe ther it can protect retlna from glaucomatous damage. Methods Twenty-four rabblts were randomIy dlvided lnto rour groups.one eye or each rabblt was model eye lnduced by 2% methyicelluious, and the other was control eye. Normal saline,TMP, timolol and a cobolnation or tlmolol and TMP were admlnlstrated to group A, B, C and D respectlvely. At the end of 4th week, eyes were excavated for Iight and electron microscoplc study. ResuIts The numbers of ganglion cells (P <o. o1) and bipolar cells (P <o. o1) ln model eye were different slgnif1cantly between group A and B. in group A, tke modeI eye gangIlon cells were karyopyknosls, chromatln marglnatlon and nucIear membrane rupture; some inner nuclear cells dcveloped marked lytlc changes l’ outer segmentaweared 4lsorganlzed i but ’group B changed sllghtly. Concndlon The results suggest that TMP may protect retlna from gIaucomatous damage.

TGF-β_1 in retinal ganglion cells in rats with chronic ocular hypertension: its expression and anti-apoptotic effect

AIM: To investigate the anti-apoptotic effect of transforming growth factor beta-1 (TGF-β1) on chronic ocular hypertension. METHODS: The expression of TGF-β1 in retinal ganglion cells (RCGs) was measured using the immunohistochemiscal S-P method and real-time PCR in the normally control group, the ocular hypertension group (experimental group A), the ocular hypertension plus antibody intervention group (experimental group B) and the ocular hypertension plus antigen intervention group (experimental group C) at 1, 2, 3 and 4 weeks postoperatively. The count of apoptotic RCGs was measured using the TUNEL method. RESULTS: The expression of TGF-β1 was significantly higher in experimental group C than that in other three groups (P<0.05). The expression was the lowest in experimental group B (4.17%). A statistically significant difference was noted between the four groups (P <0.01). The count of apoptotic RCGs was statistically significantly lower in experimental group C than that in the experimental groups A and B (P <0.01). A statistically significant difference was noted in the count of apoptotic RCGs between these three experimental groups (P <0.01). CONCLUSION: TGF-β1 can inhibit the apoptosis of RCGs in rats with chronic ocular hypertension.

双眼慢性原发性闭角型青光眼术前房水中炎症因子的表达及其对预后的影响

目的:探讨慢性原发性闭角型青光眼(CPACG)双眼先后行小梁切除术前房水中炎症因子的表达水平及其与术后滤过泡和眼压的相关性。方法:选取2021-09/12在南京医科大学附属眼科医院就诊并行小梁切除术的双眼CPACG患者15例30眼,双眼手术间隔7d,利用酶联免疫吸附试验(ELISA)分别检测双眼术前房水中单核细胞趋化蛋白-1(MCP-1)、白细胞介素-17(IL-17)、转化生长因子-β(TGF-β)和干扰素-γ(IFN-γ)的表达水平,并于术后1mo评估眼压及滤过泡形态。结果:纳入患者第一眼术前房水中MCP-1、IL-17、TGF-β和IFN-γ的含量分别为330.4±46.2、357.3±46.9、2347.5±363.8、527.7±101.6pg/mL,第二眼术前房水中MCP-1、IL-17、TGF-β和IFN-γ的含量分别为298.2±40.7、309.1±53.5、1938.3±426.0、628.2±104.9pg/mL,双眼术前房水中炎症因子表达水平均有差异(P≤0.05)。纳入患者双眼术前房水中IL-17、TGF-β表达水平与术后1mo眼压、滤过泡高度均具有相关性(P<0.05)。结论:CPACG患者第一眼术后第二眼房水中炎症因子的表达水平可能发生一定变化,其中双眼术前房水中IL-17、TGF-β的表达水平与术后眼压和滤过泡高度具有一定的相关性。

小梁切除术+超声乳化白内障吸除术+人工晶状体植入术治疗白内障合并慢性闭角型青光眼的临床效果

目的分析小梁切除术+超声乳化白内障吸除术+人工晶状体植入术治疗白内障合并慢性闭角型青光眼的临床效果。方法选择2018年4月至2021年4月于我院进行诊治的90例白内障合并慢性闭角型青光眼患者,按照电脑盲选法将其分为对照组(超声乳化白内障吸除术+人工晶状体植入术)与研究组(小梁切除术+超声乳化白内障吸除术+人工晶状体植入术),每组45例。比较两组的治疗效果。结果术后3个月,研究组的视力高于对照组,眼压低于对照组,前房深度、前房角度大于对照组(P<0.05)。术后3 d,研究组的白细胞介素-6(IL-6)、白细胞介素-8(IL-8)、白细胞介素-17(IL-17)及肿瘤坏死因子-α(TNF-α)水平低于对照组(P<0.05)。术后3个月,研究组的眼动脉舒张末期血流速度(EDV)、收缩期峰值血流速度(PSV)高于对照组,阻力指数(RI)低于对照组(P<0.05)。两组的并发症总发生率比较,差异无统计学意义(P>0.05)。结论小梁切除术+超声乳化白内障吸除术+人工晶状体植入术治疗白内障合并慢性闭角型青光眼的临床效果显著。

超声乳化联合房角镜直视下房角分离术治疗原发性慢性闭角型青光眼合并白内障的临床疗效

目的评价超声乳化联合房角镜直视下房角分离术治疗原发性慢性闭角型青光眼(CPACG)合并白内障的临床疗效。方法回顾性临床研究。选取2020年1月1日至2021年6月30日我院收治的CPACG合并白内障的患者54例(74只眼),患者入院后均行白内障超声乳化摘除联合后房型人工晶状体植入术及房角镜直视下360度房角分离术。比较患者术前、术后1周、1个月、3个月、末次随访时的BCVA和眼压;比较患者术前、术后1个月、末次随访时的中央前房深度、房角粘连性关闭(PAS)范围、中央角膜内皮细胞数,并记录术中并发症和后续治疗方案。结果术后1周、1个月、3个月及末次随访患者的BCVA分布等级与术前两两相比,差异均有统计学意义(均P<0.001),术后患者BCVA均较术前提高。术后各时间点患者眼压均较术前降低,差异均有统计学意义(均P<0.001);术前患者眼压最高,术后1周眼压下降最明显,之后缓慢升高。术后1个月和末次随访时患者中央前房深度较术前均明显增加(均P<0.001)。术后1个月和末次随访时患者的PAS范围均小于术前(均P<0.001)。术前、术后1个月和末次随访时患者的角膜内皮细胞数比较,差异无统计学意义(F=0.168,P=0.846)。末次随访时69只眼压正常,5只眼>21 mmHg,随访期间1只眼再行EXPRESS引流钉植入术,1只眼再行小梁切除术。结论超声乳化联合房角镜直视下房角分离术治疗CPACG合并白内障,可以提高患者视力,降低眼压,是安全有效的治疗手段。

超声生物显微镜下两种原发性闭角型青光眼生物学参数比较

目的比较超声生物显微镜(UBM)下急性闭角型青光眼(AACG)与慢性闭角型青光眼(CACG)眼部生物学参数差异性,进一步分析两种闭角型青光眼发作的可能解剖危险因素。方法回顾性选取2020年1月至2023年1月河南省安阳市眼科医院收治的35例单眼发作的AACG患者(发作眼和未发作眼各35只),以及35例双眼不对称损伤的CACG患者(损伤较重眼和损伤较轻眼各35只)为研究对象。使用UBM对所有患者进行检查,获取中央角膜厚度(CCT)、中央前房深度(ACD)、前房宽度(ACW)、750μm处的房角开放距离(AOD_(750))、晶状体拱高(LV)、小梁网-睫状突距离(TCPD)、虹膜厚度750μm(IT_(750))、瞳孔直径(PD)、小梁网-睫状突夹角(TCA)、虹膜根部附着位置(IRI)、虹膜形态;使用光学生物测量仪IOL Master700测量所有患者双眼轴长(AXL)。结果AACG发作眼组的CCT、LV大于CACG损伤较重眼组,ACD、AOD_(750)、TCPD和TCA小于CACG损伤较重眼组(P<0.05);AACG未发作眼组的LV大于CACG损伤较轻眼组,ACD、TCPD、TCA小于CACG损伤较轻眼组(P<0.05);AACG发作眼组的CCT、LV和PD大于AACG未发作眼组,ACD、AOD_(750)和TCPD小于AACG未发作眼组(P<0.05);CACG损伤较重眼组的ACD、TCPD小于CACG损伤较轻眼组(P<0.05)。AACG组IRI 3种类型较均衡,CACG组较集中于靠前型和中间型;AACG组虹膜形态主要集中于膨隆型,CACG组两种类型较均衡。结论ACD、LV和TCA可能是AACG区别于CACG的主要解剖结构参数。

姜黄素对慢性高眼压大鼠视网膜神经节细胞凋亡的影响及机制

目的:探讨姜黄素对慢性高眼压大鼠视网膜神经节细胞(RGCs)凋亡的影响及机制。方法:将21只SD大鼠随机分为3组,每组7只,高眼压模型组和姜黄素治疗组大鼠通过烧灼巩膜上静脉法建立慢性高眼压模型,假手术组大鼠仅剪开球结膜,不烧灼巩膜上静脉;姜黄素治疗组给予4mL/kg姜黄素灌胃,假手术组和高眼压模型组给予4mL/kg纯水灌胃,连续3wk。造模后3wk,采用HE染色观察各组大鼠视网膜组织形态病理变化、RGCs数量及神经节细胞层(GCL)厚度;采用TUNEL染色观察各组大鼠RGCs和视网膜细胞凋亡情况;采用实时荧光定量PCR、免疫组织化学染色和Western blot法检测各组大鼠视网膜谷氨酰半胱氨酸连接酶调节亚基(GCLM)与血红素加氧酶-1(HO-1)的表达水平。结果:与假手术组相比,高眼压模型组和姜黄素治疗组大鼠视网膜组织形态紊乱,RGCs数量减少,GCL变薄,RGCs和视网膜细胞凋亡率均升高,GCLM和HO-1表达量均升高;与高眼压模型组相比,姜黄素治疗组大鼠视网膜组织形态基本正常,RGCs数量增多,GCL增厚,RGCs和视网膜细胞凋亡率均降低,GCLM和HO-1表达量均升高。结论:姜黄素在慢性高眼压大鼠模型中可通过上调抗氧化基因GCLM与HO-1的表达抑制RGCs凋亡。

慢性青光眼和非青光眼视神经萎缩黄斑厚度的比较

目的对比慢性青光眼和非青光眼视神经萎缩的黄斑厚度的差异,找出两者的异同。方法选取2012年1月至2014年9月在我院门诊和住院治疗的患者为研究对象,其中慢性青光眼11例17眼为青光眼组,非青光眼视神经萎缩患者20例26眼为非青光眼组;选择同期正常老年女性23名44眼为对照组,对三组均进行黄斑区OCT 3D模式扫描,并对黄斑的平均及各方位厚度进行分析。结果黄斑厚度青光眼组为(243.76±16.93)μm,非青光眼组为(245.45±12.80)μm,对照组为(273.06±14.86)μm,青光眼组较对照组黄斑厚度下降28.58μm,非青光眼组较对照组黄斑厚度下降27.81μm(均为P<0.05);黄斑中央区厚度三组无明显差异(均为P>0.05);青光眼组、非青光眼组与对照组相比,黄斑内环、外环各区均有变薄,差异均有统计学意义(均为P<0.05)。青光眼组与非青光眼组相比,黄斑厚度除颞外区存在差异外,其他各区数据对比差异均无统计学意义(均为P>0.05)。结论慢性青光眼与非青光眼视神经萎缩患者黄斑厚度均变薄,黄斑厚度扫描并不能鉴别两者。