Ocular neovascularization with retinal vascular occlusion-III. Incidence of ocular neovascularization with retinal vein occlusion

A prospective natural history study was conducted in 721 eyes with various types of retinal vein occlusion (RVO) to determine the incidence of various types of ocular neovascularization (NV) and the factors that influence the development of ocular NV. The material was 360 eyes with central retinal vein occlusion (CRVO), 97 eyes with hemi-CRVO, and 264 eyes with branch retinal vein occlusion (BRVO); these cases were further subdivided into six groups for logical data analysis: nonischemic CRVO (venous stasis retinopathy-VSR, 282 eyes), ischemic CRVO (hemorrhagic retinopathy-HR, 78 eyes), hemi-VSR (66 eyes), hemi-HR (31 eyes), major BRVO (191 eyes) and macular BRVO (73 eyes). Ocular NV attributable to RVO was seen only in HR, hemi-HR, and major BRVO. In HR the anterior segment was the major site of NV, with iris and angle NV and neovascular glaucoma (NVG), while in hemi-HR and major BRVO the retina and optic disc were the major sites of NV. The principal factor influencing the development of ocular NV in RVO seems to be the severity and extent of retinal ischemia, while duration of follow-up since onset also plays an important role in determining the incidence of ocular NV. The findings and subject of ocular NV in RVO are discussed in detail along with a review of the pertinent literature.     

抗VEGF时代激光视网膜光凝在视网膜静脉阻塞临床管理中的价值

视网膜静脉阻塞(retinal vein occlusion, RVO)是仅次于糖尿病视网膜病变的常见视网膜血管疾病,其视力损害的主要原因是黄斑水肿(macular edema,ME)和眼部新生血管(neovascularition,NV)并发症,尤其是新生血管性青光眼(neovascular glaucoma,NVG)。虽然激光视网膜光凝治疗ME、NV和NVG的疗效早已明确,但抗VEGF治疗可有效改善RVO患者的视力预后,已成为RVO-ME的一线治疗方法,也有助于治疗NV和NVG。近期研究表明,增加激光治疗并不能增加抗VEGF治疗RVO-ME的视力收益,也不能降低抗VEGF注射次数;抗VEGF治疗不能阻止,但可延迟缺血性RVO发生NV并发症。播散性激光视网膜光凝仍是治疗NV并发症的核心方法,但不鼓励预防性激光治疗。(眼科,2022,31:165-168)     

Aqueous levels of erythropoietin in acute retinal vein occlusion with macular edema

AIM: To investigate the aqueous erythropoietin (EPO) levels and associated factors in patients with acute retinal vein occlusion (RVO).METHODS:The aqueous EPO level was measured in patients with macular edema (ME) secondary to acute branched retinal vein occlusion (BRVO) or central retinal vein occlusion (CRVO). Aqueous fluid from cataract patients served as the control. We also evaluated whether aqueous level of EPO was associated with factors such as serum EPO level, non-perfusion area, central macular thickness (CMT), and arterio-venous (AV) transit timeRESULTS:Twenty-seven RVO patients (16 BRVO, 11 CRVO) and 9 control subjects were enrolled in the study. The aqueous EPO level (mU/mL) was higher in RVO (68.2±54.3) than that in the control subjects (12.9±5.9). More specifically, the aqueous EPO level was higher in CRVO (118.9±52.1) than that in BRVO (33.3±10.8). However, no differences were found in serum EPO levels among three groups. CMT in RVO patients had a positive correlation with the aqueous EPO level (r=0.66). Also, in terms of non-perfusion area, the aqueous EPO levels were more elevated in the ischemic subgroup than in the non-ischemic subgroup in both BRVO and CRVO.CONCLUSION:Aqueous EPO levels are elevated in patients with macular edema secondary to recent onset RVO. Patients with CRVO have higher EPO levels than those with BRVO. The aqueous EPO level in RVO has a positive correlation with CMT and is associated with non-perfusion area. These results suggest that the aqueous EPO level could be associated with retinal ischemia and may be involved in the pathogenesis of macular edema secondary to RVO.     

Intravitreal anti-VEGF agents, oral glucocorticoids, and laser photocoagulation combination therapy for macular edema secondary to retinal vein occlusion: preliminary report

AIM: To evaluate the efficacy and safety of combined anti-vascular endothelial growth factor (VEGF) agents, oral glucocorticoid, and laser photocoagulation therapy for macular edema (ME) secondary to retinal vein occlusion (RVO). METHODS: This study included 16 eyes of 16 patients with RVO-associated ME. Patients were initially treated with oral prednisone and an intravitreal anti-VEGF agent. Two weeks later, patients underwent standard laser photocoagulation. Best-corrected visual acuity (BCVA), central retinal thickness (CRT), and retinal vessel oxygenation were examined over 12mo. RESULTS: Patients received 1.43±0.81 anti-VEGF injections. Mean baseline and 12-month logMAR BCVA were 0.96±0.51 (20/178) and 0.31±0.88 (20/40), respectively, in eyes with central retinal vein occlusion (CRVO) (P<0.00), and 1.02±0.45 (20/209) and 0.60±0.49 (20/80), respectively, in eyes with branch retinal vein occlusion (BRVO) (P<0.00). At 12mo, CRT had significantly decreased in eyes with CRVO (P<0.00) and BRVO (P<0.00). Venous oxygen saturation had significantly increased in eyes with CRVO (P<0.00) and BRVO (P<0.00). No examined parameters were significantly different between the 2 RVO groups. No serious adverse effects occurred. CONCLUSION: Anti-VEGF, glucocorticoid, and photocoagulation combination therapy improves visual outcome, prolongs therapeutic effect, and reduces the number of intravitreal injections in eyes with RVO-associated ME.     

Surgical macular decompression for macular edema in retinal vein occlusion

BACKGROUND: Recently, a number of surgical and laser approaches have been used to improve visual outcome in cases of central retinal vein occlusion (CRVO) and branch retinal vein occlusion (BRVO). Intravitreal steroid injection alone appears to offer only temporary improvement at best. Radial optic neurotomy for CRVO and arteriovenous adventitial sheathotomy for BRVO are the most frequently utilized surgical procedures for these conditions, but evidence regarding efficacy is still lacking. We have suggested that macular decompression by internal limiting membrane (ILM) peeling may reduce macular edema and hemorrhage and improve visual acuity by relieving elevated intraretinal tissue pressure and facilitating egress of blood and extracellular fluid out of inner retinal layers into the vitrectomized vitreous cavity. METHODS: 50 cases of severe visual loss due to macular edema caused by CRVO or BRVO, not eligible for laser photocoagulation, underwent pars plana vitrectomy with removal of preretinal hyaloid, peeling of the ILM stained with indocyanine green dye, air-fluid exchange, and postoperative prone positioning. RESULTS: In all cases, intraretinal blood and retinal thickening diminished within 6 weeks of surgery. Visual acuity improved in 87% of CRVO cases and 68% of BRVO cases. Vision improved and stabilized at 39 days after surgery. Average improvement was 2.6 lines with a 6-line improvement in 1 case. There was no difference in outcome between cases with ischemic or nonischemic features on fluorescein angiography. INTERPRETATION: Macular decompression using vitrectomy and ILM peeling is effective in the treatment of severe visual loss due to macular edema in CRVO and in those BRVO cases that do not qualify for laser photocoagulation.     

视网膜静脉阻塞激光治疗后玻璃体出血的临床分析

目的：了解视网膜静脉阻塞(RVO)激光治疗后发生玻璃体出血的原因。方法：回顾分析2年来门诊11例(11眼，CRVO：2眼；BRVO：9眼)激光后的视网膜静脉阻塞发生玻璃体出血的病例。结果：11例RVO中：少量玻璃体出血5例；中-多量玻璃体出血6例，其中2例作玻璃体切除术，其余激光治疗后出血停止而治愈。由初次激光治疗到玻璃体出血时间6月-11年，再次激光或／和手术后视力均有改善。结论：不规范或不完全的视网膜光凝是导致RVO激光治疗发生玻璃体出血的主要原因，规范的视网膜光凝、定期随诊和眼底荧光造影是保证疗效的关键。     

小梁切除术联合视网膜光凝术治疗新生血管性青光眼

目的 探讨复合小梁切除术联合视网膜光凝术治疗新生血管性青光眼的疗效.方法 回顾性分析视网膜中央静脉阻塞继发新生血管性青光眼患者9例,行复合小梁切除术,术后1周予全视网膜光凝术.记录术前及术后3个月、12个月患者视力、眼压、虹膜及房角新生血管检查,眼底视网膜新生血管消退及无灌注区情况.结果 术后12个月患者视力提高8眼,1眼无明显提高.术后眼压：5例患者眼压控制在21mmHg以下;4例眼压控制欠佳,需要局部使用降眼压药物,其中2例使用一种局部降眼压药物后眼压控制在21mmHg以下,另外2例眼压不能控制.虹膜及房角新生血管消退.眼底3个月和12个月后行荧光血管造影显示新生血管消退,无水肿,毛细血管无灌注区消失.结论 复合小梁切除术联合全视网膜光凝术是一种治疗视网膜中央静脉阻塞继发的新生血管性青光眼的有效的方法.     

Evaluation of hyperreflective foci as a prognostic factor of visual outcome in retinal vein occlusion

AIM: To evaluate the potential role of hyperreflective foci (HF) as a prognostic indicator of visual outcome in patients with macular edema (ME) due to retinal vein occlusion (RVO). METHODS: We retrospectively reviewed 50 eyes of 50 patients with ME due to ischemic central retinal vein occlusion (CRVO), non-ischemic CRVO and branch retinal vein occlusion (BRVO) who were treated with anti-vascular endothelial growth factor (anti-VEGF) at Beijing Tongren Eye Center from January 2013 to July 2016. All patients underwent best-corrected visual acuity (BCVA), spectral domain optical coherence tomography (SD-OCT) at baseline and follow-up. Such factors were evaluated and compared among three groups as baseline and final BCVA, central retinal thickness (CRT), external limiting membrane (ELM) status and the numbers of HF in different position. Multiple linear regression analysis was employed to analyze the relationship between baseline HF and final BCVA. Changes of HF before and after treatment were evaluated too. RESULTS: Among three groups, HF could be located in each retinal layers, as well as in vitreous cavity. The mean HF in outer retinal layer (ORL) at baseline was 5.29±8.48 in ischemic CRVO with intact ELM, 1.93±2.76 in non-ischemic CRVO, and 1.75±2.05 in BRVO. With disrupted ELM, the mean HF in ORL increased. There was statistically difference of HF in ORL between intact and disrupted ELM. The numbers of HF in ORL were associated with poor visual outcome among three groups. However, HF in inner retinal layer (IRL) and vitreous cavity were not associated with poor visual outcome. Meanwhile, the baseline HF in ORL and vitreous cavity reduced significantly in non-ischemic CRVO and BRVO after anti-VEGF treatment. CONCLUSION: The numbers of HF in ORL are prognostic factors associated with the final BCVA in patients with ME due to RVO after anti-VEGF treatment.     

视网膜光凝联合雷珠单抗玻璃体内注射治疗视网膜中央静脉阻塞

目的：研究氩激光视网膜光凝联合雷珠单抗玻璃体内注射治疗缺血型视网膜中央静脉阻塞(central retinal vein occlusion,CRVO)伴发黄斑水肿及视网膜新生血管的临床疗效。

方法：回顾性分析2012-01/2013-05就诊于我院眼科确诊的缺血型CRVO 24例24眼患者行氩激光视网膜光凝联合雷珠单抗玻璃体内注射治疗。观察治疗前及治疗后1wk; 1,3,6mo的最佳矫正视力、眼压、眼底病变情况,治疗前和治疗后1,3,6mo的眼底荧光血管造影(FFA)表现和光学相干断层扫描(OCT)测量黄斑中心凹视网膜厚度(CMT)的改变。

结果：随诊时间大于6mo。20例(83%)患者视力有不同程度提高,其中17例(71%)患者黄斑水肿明显减轻或消失; 4例患者视力维持于就诊时水平。1例治疗前有虹膜新生血管,治疗后1mo虹膜新生血管消退无继发新生血管性青光眼发生。

结论：氩激光视网膜光凝联合雷珠单抗玻璃体内注射治疗缺血型CRVO可有效提高视力,促进视网膜出血、渗出及水肿的吸收,同时可减少视网膜静脉阻塞引起的新生血管,对预防继发性新生血管性青光眼的发生有明显效果。     

氩激光治疗视网膜静脉阻塞57例

目的:分析57例氩激光光凝治疗视网膜静脉阻塞(retinal vein occlusion, RVO)的临床疗效。方法:随访我院57例被确诊为视网膜静脉阻塞并经氩激光光凝治疗后的患者,观察患者的视力、眼底改变以及并发症情况并评价氩激光光凝治疗视网膜静脉阻塞的临床价值。激光治疗方法分为黄斑区格栅样光凝,局灶性视网膜光凝及全视网膜光凝。结果:经氩绿激光光凝治疗57例后3～6mo给予复查:末次随访视力提高23眼,视力无明显变化25眼,视力下降9眼;激光治疗后复查荧光素眼底血管造影 (观察视网膜毛细血管无灌注区面积变化及新生血管消退情况),治疗有效54眼, 3眼发展为新生血管性青光眼(NVG)。而激光光凝对于黄斑部晚期并发症无明显效果。结论:激光光凝治疗可提高中心视力,可促进视网膜水肿、出血、渗出的吸收,同时减少视网膜静脉阻塞引起的新生血管,对于预防并延缓增殖性玻璃体视网膜病变和继发性新生血管性青光眼的发生有明显效果。     

曲安奈德联合激光光凝治疗视网膜静脉阻塞继发黄斑水肿

目的：观察玻璃体腔内曲安奈德( trialcinolone acetonide, TA)注射联合黄斑格栅样光凝治疗视网膜静脉阻塞引起黄斑水肿的疗效分析。
　　方法：检眼镜、眼底血管造影( FFA )、光学相干断层扫描( OCT)检查证实的由视网膜静脉阻塞引起的黄斑水肿患者35例35眼,玻璃体内注射TA 2lg,1~4wk内黄斑水肿减轻后行黄斑格栅样光凝,随访6lo,观察视力、眼压、晶状体,OCT 观察黄斑厚度改变,FFA 观察眼底毛细血管渗漏情况。
　　结果：视网膜中央静脉阻塞( central retinal vein occlusion, CRVO)中非缺血型10眼,缺血型14眼;视网膜分支静脉阻塞( branch retinal vein occlusion, BRVO)中非缺血型4眼,缺血型7眼。最终视力提高者19眼,不变者11眼,比术前降低者5眼。 OCT检查黄斑中心凹形态恢复正常者9眼,FFA提示黄斑区荧光素渗漏与术前相比消失或明显减轻;黄斑囊样水肿明显改善者21眼,FFA 提示渗漏比术前减轻;无改善者5眼,FFA 提示黄斑区渗漏比术前加重或不变。
　　结论：玻璃体腔内注射TA 2 lg联合黄斑格栅样光凝治疗视网膜静脉阻塞继发黄斑水肿,可以明显减轻由静脉阻塞引起的黄斑水肿,并提高患者视力,是一种有效可行的方法。     

Comparison of anti-vascular endothelial growth factors, laser treatments and a combination of the both for treatment of central retinal vein occlusion

AIM: To compare changes in visual acuity and macular edema in patients with central retinal vein occlusion (CRVO) treated with intravitreal injections of bevacizumab, macular grid photocoagulation combined with pan retinal photocoagulation (PRP), or both (bevacizumab+grid+PRP). METHODS: Our study is a retrospective cohort clinical study that examined patients that suffered from ischemic CRVO with macular edema. Study inclusion criteria were ischemic CRVO with macula edema and the availability of complete medical records for at least 12mo after treatment. Excluded were patients with diabetes or any other retinal disease. We reviewed the medical records of patients treated in one ophthalmology department-comparing changes in visual acuity and macular edema in patients treated with intravitreal injections of bevacizumab vs those that were treated with macular grid photocoagulation and PRP or both. The main outcome measures were the differences in best corrected visual acuity (BCVA) and in macular thickness, as assessed by optical coherence tomography, between the enrollment and the final follow up visits. RESULTS: Sixty-five patients met inclusion criteria. There were no statistically significant differences among the three groups in the mean changes in macular thickness as measured by ocular coherence tomography (131.5±41.2, 108.6±29.2, and 121.1±121.1, P=0.110), or in visual acuity (0.128±0.077, 0.088±0.057, and 0.095±0.065), for intravitreal injections, macular grid photocoagulation+PRP and a combination of the treatments, respectively, P=0.111. The proportions of patients with macular edema after treatment were: 26.1%, 28.6%, and 14.3%, respectively, P=0.499. CONCLUSION: Similar benefit was observed for intravitreal injections, laser photocoagulation, or a combined regimen in the treatment of CRVO. A non-statistically significant trend for reduction in macular edema was observed following combined treatment.     

532激光激发Erythrosin B建立大鼠视网膜静脉阻塞模型

目的：用光敏剂Erythrosin B激光诱导建造大鼠视网膜静脉阻塞模型,并观察该疾病模型的疾病过程以及组织学改变。 方法：分别于0,1,3h;1,2,4,7,14,21d对激光建模后的中央静脉阻塞（CRVO）和分支静脉阻塞（BRVO）大鼠模型行眼底观察、眼底照相和荧光造影。再分别于7,14,21d行视网膜组织切片检查。 结果：可以观察到CRVO组和BRVO组大鼠阻塞的静脉在造模后7d完全再灌注。视网膜出血和水肿在第4d最严重,到第14d时,造模组大鼠的视网膜都可观察到苍白水肿;第21d时,CRVO组视网膜内可观察到有黄色沉淀物。在BRVO组,视网膜出血局限于阻塞的静脉区域,但是视网膜水肿往往在一定程度波及到静脉未阻塞的象限。无论CRVO还是BRVO组,14d后都可以观察到显著的神经节细胞层细胞缺失。 结论：采用Erythrosin B作为光敏剂,532nm激光照射视网膜制备大鼠视网膜静脉阻塞模型血管阻塞可以持续7d。CRVO组和BRVO组都可以观察到显著的视网膜神经节细胞层细胞的缺失。该动物疾病模型稳定,可以为视网膜缺血和细胞凋亡的分子机制研究提供帮助。     

Long-term real-world outcomes in retinal vein occlusions: How close are we to the trials?

Purpose:To assess and analyze the visual outcomes of patients with retinal vein occlusions in a real-world setting with a long-term follow-up of more than 5 years.Methods:Retrospective analysis of 56 patients having retinal vein occlusions from a tertiary eye center, with a mean follow-up of 7 years was performed. Primary outcome measures were mean change in best-corrected visual acuity (BCVA) from baseline at 6 months, 1 year, 2 years, 3 years, and final visit (≥5 years), proportion of patients having BCVA better than 20/40 and worse than 20/200, and mean number of injections. Secondary outcome measures were change in central macular thickness (CMT), development of subsequent retinal vein occlusion (RVO) in same eye or the other eye, and development of neovascular complications.Results:The mean change in letter score was + 11.84 in branch RVO (BRVO), +7.14 in non-ischemic central RVO (CRVO), and −9.5 in ischemic CRVO at 1 year, which changed to + 8.57, −5 and − 24, respectively, at the end of follow-up. CMT had improved from 506 ± 98.8 µm, 576.44 ± 149 µm, and 618 ± 178.27 µm, respectively, at baseline to 267 ± 94 µm, 345.20 ± 122.61 µm, and 265.50 ± 107.75 µm, respectively, in BRVO, non-ischemic, and ischemic hemi RVO (HRVO)/CRVO groups. The total mean number of injections given in BRVO, non-ischemic CRVO, and ischemic CRVO groups were 4.6, 6.6, and 4.1, respectively. None of the patients with BRVO developed neovascular glaucoma (NVG). Non-ischemic to ischemic HRVO/CRVO conversion was noted in 4/11 eyes at a mean duration of 12.6 months. NVG was noted in 7/9 eyes (77.8%) in initial ischemic CRVO/HRVO group and 3/4 (75%) converted eyes.Conclusion:Patients with BRVO have good visual outcomes with anti-VEGF, while in CRVO results may vary considerably owing to patient compliance and treatment burden on long-term follow-up in a real-world setting.     

氩激光视网膜光凝联合曲安奈德球内注射治疗 缺血型视网膜中央静脉阻塞

目的探讨氩激光视网膜光凝联合曲安奈德球内注射治疗缺血型视网膜中央静脉阻塞(CRVO)的临床疗效。方法2003年12月至2005年1月对17例（17只眼）缺血型CRVO患者行氩激光视网膜光凝联合曲安奈德球内注射治疗。结果随访4～10个月。16例患者视力提高，其中14例患者黄斑水肿明显减轻或消失，5例患者在3个月以后黄斑水肿复发，视力下降。6例患者在球内注射后出现眼压升高，给予对症处理后缓解。无房角新生血管形成及继发性新生血管性青光眼发生。结论氩激光视网膜光凝联合曲安奈德球内注射治疗缺血型CRVO可以提高患者视力，减少并发症。但是一部分患者黄斑水肿可能复发。(中华眼底病杂志,2005,21:224-225)     

视网膜分支静脉阻塞合并黄斑囊样水肿早期激光治疗的临床疗效观察

目的 探讨多波长氪激光治疗视网膜分支静脉阻塞(BRVO)合并黄斑囊样水肿的临床疗效.方法 经眼底荧光血管造影(FFA)确诊为视网膜分支静脉阻塞合并黄斑囊样水肿的患者85例85只眼,使用多波长氪离子激光治疗仪进行早期视网膜光凝治疗,光斑反应为Ⅲ级.术后连续随访12个月,对比分析视网膜光凝前及光凝后1个月、3个月、6个月、...     

视网膜分支静脉阻塞治疗研究现状

视网膜静脉阻塞（retinal vein occlusion,RVO）是继糖尿病性视网膜病变第二大视网膜血管类疾病,可分为视网膜中央静脉阻塞和视网膜分支静脉阻塞（branch retinal vein occlusion,BRVO）。BRVO的具体发病机制目前尚不明确,且发病率逐年升高。BRVO常发生黄斑水肿（macular edema,ME）,反复的ME会导致永久的视力下降。传统的治疗包括黄斑区格栅样光凝和以曲安奈德、地塞米松为代表的糖皮质激素类药物,近年来,抗血管内皮生长因子类药物及玻璃体手术的发展已成为新的治疗方法。本文就BRVO的治疗进展作一简要综述。     

单眼视网膜静脉阻塞患者对侧眼黄斑区血流密度和中心凹无血管区面积观察

目的:观察单眼视网膜静脉阻塞(RVO)患者对侧眼黄斑区血流密度和黄斑中心凹无血管区(FAZ)面积。方法:回顾性病例对照研究。2018年5~11月在长沙爱尔眼科医院临床确诊为单眼RVO的78例患者78只对侧眼纳入研究。其中,男性44例,女性34例;平均年龄(53.17±10.12)岁。视网膜中央静脉阻塞(CRVO)42例(CRVO组),视网膜分支静脉阻塞(BRVO)36例(BRVO组)。选取年龄和性别与RVO患者相匹配的33名正常健康者42只眼作为对照组。其中,男性17例22只眼,女性16例20只眼;平均年龄(53.48±10.84)岁。3组受检眼均行OCT血管成像检查,以仪器自带软件自动识别以黄斑中心凹为中心的直径6 mm区域及FAZ,自动测量黄斑区浅层和深层血流密度及FAZ面积。对比分析3组受检眼黄斑区浅层、深层血流密度和FAZ面积。结果:与对照组比较,CRVO组(t=-4.26、-4.93)、BRVO组(t=-4.79、-4.74)受检眼黄斑区浅层及深层血流密度均降低,差异均有统计学意义(P<0.05)。CRVO组、BRVO组受检眼黄斑区浅层及深层血流密度降低幅度分别为4.13%、5.51%及3.50%、4.58%,深层血流密度的降低幅度较浅层更大。CRVO组受检眼FAZ面积较对照组减小,差异有统计学意义(t=-3.43,P<0.05)。BRVO组与对照组受检眼FAZ面积比较,差异无统计学意义(t=-0.10,P>0.05)。结论:单眼RVO患者对侧眼黄斑区血流密度较正常健康眼降低,黄斑区深层血流密度的降低幅度较浅层更大。与正常健康眼比较,单眼CRVO患者对侧眼FAZ面积减小,单眼BRVO患者对侧眼FAZ面积无明显变化。     

玻璃体腔注射TA联合激光治疗非缺血型CRVO继发黄斑水肿

目的:评价玻璃体腔注射曲安奈德(intravitreal triamcinolo-ne acetonide,IVTA)联合激光治疗非缺血型视网膜中央静脉阻塞继发黄斑水肿的临床效果。方法:将非缺血型视网膜中央静脉阻塞继发黄斑水肿56眼随机分为两组:IVTA联合532半导体激光黄斑部光凝(治疗组)30眼,单独行532半导体激光黄斑部光凝治疗(对照组)26眼。每组在治疗前后查最佳矫正视力、眼压、眼底荧光血管造影(fluorescein fundus angiography,FFA)了解黄斑部荧光渗漏情况、光学相干断层扫描(optic coher-ent tomography,OCT)测量黄斑区视网膜厚度变化。治疗组为先行黄斑格栅样光凝,2wk后进行IVTA4mg。结果:治疗后3mo时,在治疗组中,23眼(77%)视力提高,7眼(23%)视力不变;FFA示黄斑部荧光渗漏明显减轻;黄斑中心凹平均厚度为(170±32)μm。在对照组中,15眼(58%)视力提高,11眼(42%)视力不变;FFA示黄斑部荧光渗漏减轻;黄斑中心凹平均厚度为(223±57)μm。两组视力变化及黄斑中心凹平均厚度改变比较差异有统计学意义(χ2=4.20,χ2=5.13,P<0.01)。结论:IVTA联合激光治疗非缺血型视网膜中央静脉阻塞继发黄斑水肿效果较好。     

氩绿激光治疗视网膜分支静脉阻塞的临床疗效

目的:探讨氩绿激光治疗视网膜分支静脉阻塞的临床疗效。方法:经眼底荧光血管造影(FFA)确诊为视网膜分支静脉阻塞(BRVO)患者60例60眼。患者随机分两组:A组(治疗组)使用氩绿视网膜光凝治疗30例;B例(对照组)口服活血化瘀药物(复方血栓通胶囊)治疗30例;两组患者随访时间为治疗后1,3,6,12mo,随访内容为视力、FFA检查及眼底情况,对治疗6mo后视力恢复结果和黄斑水肿消退情况进行对比。结果:A组:显效8例,有效20例,无效2例。B组:显效2例,有效14例,无效14例。A组合并黄斑囊样水肿者14例,给予氩绿视网膜光凝治疗后黄斑水肿消退12例,未消退2例;B组合并黄斑囊样水肿者13例,药物治疗后黄斑水肿消退3例,未消退10例,经卡方检验,差异有统计学意义(P<0.05)。结论:氩绿激光对视网膜分支静脉阻塞的激光治疗有显著疗效,激光治疗组治疗后6mo病情稳定,效果好。