眼压在视网膜静脉阻塞中的意义

目的:探讨眼压在视网膜静脉阻塞中的意义。方法:应用TX-F眼压计对23例23眼,视网膜静脉阻塞(retinal vein occlusion,RVO)患者的眼压进行测量。对照组与病例组年龄和性别相配,例数相等。结果:18例RVO阻塞眼眼压较对侧眼有不同程度降低。RVO阻塞眼眼压显著低于对侧眼及正常对照眼(P<0.01)。结论:RVO可引起患者眼压降低。     

眼压和眼轴长与视网膜静脉阻塞的关系

目的探讨眼压和眼轴长与视网膜静脉阻塞（RVO）的关系。方法应用CanonTX-F型眼压计对56例RVO患者的眼压进行测量,并用A超对其眼轴进行测量,对照组为年龄、性别相匹配的98例白内障摘除患者。结果视网膜中央静脉阻塞（CRVO）阻塞眼眼压显著低于对测眼及正常对照眼（P〈0.01）;视网膜分支静脉阻塞（BRVO）阻塞眼眼压与对测眼及正常对照眼比较差异无显著性（P〉0.05）。CRVO阻塞眼眼轴长与对照眼比较差异有显著性（P〈0.01）;BRVO阻塞眼眼轴长与对照眼比较差异无显著性（P〉0.05）。结论眼轴长偏短是CR-VO的危险因素,CRVO可引起眼压降低;眼轴长偏短不是BRVO的危险因素,BRVO不能引起眼压降低。     

眼球轴长与视网膜中央静脉阻塞关系的探讨

目的探讨眼球轴长与视网膜中央静脉阻塞(centralreinalveinocclusion,CRVO)的相关关系.方法采用A超测量30例CRVO患者及120例年龄匹配的正常人及白内障摘除患者眼球轴长.结果CRVO组患眼平均轴长(22.54±0.74)mm,对侧眼平均轴长(22.95±0.92)mm;经统计学处理,差异无显著性(t=2.94,P>0.05).对照组右眼平均轴长(23.45±0.66)mm,左眼平均轴长(23.56±0.95)mm,左右眼比较差异无显著性(t=1.96,P>0.05).CRVO组患眼与对照组轴长比较,差异有显著性(t=4.09,P<     

视网膜电图在视网膜中央静脉阻塞分型中的应用价值

我们选择不同的刺激条件，对３２例早期视网膜中央静脉阻塞（ｃｅｎｔｒａｌｒｅｔｉｎａｌｖｅｉｎｏｃｃｌｕｓｉｏｎ，ＶＲＶＯ）患者进行视网膜电图（ｅｌｅｃｔｒｏｒｅｔｉｎｏｇｒａｍ，ＥＲＧ）的检测。缺血型ＣＲＶＯｌ３例的ａ、ｂ波潜伏期延长，ｂ波振幅明显下降；非缺血型ＣＲＶＯ１９例的ａ、ｂ波潜伏期延长，ｂ波振幅表现为轻度降低、升高或正常。提示ｂ波振幅和ｂ／ａ值是区分缺血型与非缺血型ＣＲＶＯ的最敏感指标。我们还探讨了ＥＲＧ在早期ＣＲＶＯ分型中的应用价值。     

衣原体结膜炎与视网膜中央静脉阻塞

报道一例与衣原体有关的视网膜静脉阻塞（CRVO），其临床过程是可逆的。     

有效降低眼压联合尿激酶治疗视网膜静脉阻塞

视网膜静脉阻塞 (ｒｅｔｉｎａｌｖｅｉｎｏｃｃｌｕｓｉｏｎ ,ＲＶＯ )是较常见的视网膜血管性病变 ,常与静脉回流障碍有关 ,对视力危害较大 ,治疗有一定难度 ,本人于 1992～ 1999年采用有效控制眼压联合尿激酶等药治疗4 8例 (4 8只眼 )取得一定疗效 ,现报道如下。1　临床资料1.1　一般资料　 4 8例ＲＶＯ患者 ,男 2 9例 ,女 19例 ,最大年龄 71岁 ,最小 32岁 ,平均年龄 54.6岁。中央静脉阻塞 14例 ,分支静脉阻塞 34例 ,单眼发病。 4 8例眼压均在正常范围。 4 3例有网膜动脉硬化 ,糖尿病 5例 ,高血压 19例。发病至就诊时间 1周之内 2 2例 ,1…     

视网膜中央静脉阻塞的分型：附29例报告

视网膜中央静脉阻塞的分型（附２９例报告）北京医科大学第一医院眼科陈斯同，陈家彝，吴静安视网膜中央静脉阻塞（Ｃｅｎｔｒａｌｒｅｔｉｎａｌｖｅｉｎｏｃｃｌｕｓｉｏｎ，ＣＲＶＯ）是临床上常见的眼底血管病，其临床表现、发展过程、治疗效果及预后常常差异较大，这...     

The venous closing pressure in central retinal vein obstruction

Objective: To assess the rate of change in the central retinal venous closing pressure in central retinal vein obstruction over time, and its relationship to visual acuity improvement and the development of rubeosis iridis.
Methods: Fifty patients presenting with central retinal vein obstruction of less than three months' duration, between the ages of 40 and 80 years, were reviewed prospectively. The central retinal venous closing pressure was measured by digital ocular compression. Patients were discharged from the study after the six-month visit.
Results: All patients had elevated venous closing pressure at presentation, whereas at six months only 24 patients had persistent elevation. Of 16 patients with lowering of the venous closing pressure within four months of onset of central retinal vein obstruction, 11 (69%) had two or more lines of visual acuity improvement. Only two of 10 patients (20%) developing lowering of the venous closing pressure thereafter had visual improvement. No patient developed rubeosis iridis after the venous closing pressure lowered.
Conclusion: The central retinal venous closing pressure is raised in central retinal vein obstruction to about central retinal arterial diastolic pressure, and is its pathognomonic sign. This sign is easily elicited via digital pressure on the eyelid, and has prognostic significance for visual acuity improvement and the development of rubeosis iridis.     

Retino-choroidal ischemia in central retinal vein occlusion

A 41-year-old gentleman with insulin dependent diabetes had decreased vision in the right eye due to non-ischemic central retinal vein occlusion with macular edema. One month following intravitreal ranibizumab, he developed retino-choroidal ischemia with further loss of vision. Authors show the fluorescein angiographic transition from non-ischemic central retinal vein occlusion to retino-choroidal ischemia.     

放射状视神经切开术治疗视网膜中央静脉阻塞的效果观察

目的观察放射状视神经切开术(RON)治疗视网膜中央静脉阻塞(CRVO))的效果。方法CRVO患者7例(7眼),均进行眼科常规检查、眼底荧光血管造影(FFA)和光学相干断层扫描(OCT)检查后确诊。行标准三通道闭合式玻璃体切除手术后,使用改良的MVR刀在视盘鼻侧缘做放射状视神经切开术。结果术中和术后无严重并发症。6例术后视网膜出血、静脉迂曲扩张和黄斑水肿等视网膜淤滞状态逐渐消退,视力均有不同程度的提高。1例年轻患者术后发生玻璃体积血。结论RON手术可以改善CRVO的视网膜淤滞状态和提高视力,但需要进一步观察手术的远期效果。     

Combined central retinal vein and cilioretinal artery occlusion

We present a case of combined central retinal vein and cilioretinal artery occlusion which, due to the absence of the temporal branch retinal artery, was initially misdiagnosed as a combined central retinal vein occlusion and temporal branch retinal artery occlusion. Given that – in contrast to cases of combined central artery and central retinal vein occlusion – the prognosis for cilioretinal artery occlusion with central retinal vein occlusion is quite good, this case illustrates the importance of suspecting an unusual condition in the presence of a combined occlusion.     

视网膜中央静脉阻塞病因的研究进展

视网膜中央静脉阻塞（CRVO）是临床上常见的视网膜疾病,因其严重的并发症导致视力下降甚至失明,到目前为止,其病因尚未明确。近年来,随着科学技术的进步,人们对于该病基础与临床研究不断深入,有关本病的病因方面有一些新的认识和进展,本文对其病因研究进展作一简要综述。     

視網膜中央静脈阻塞與球后血流動力學及血液流變學相關性研究

目的探討視網膜中央静脈阻塞(CRVO)患者的視網膜中央動脈(CRA),眼動脈(OA)的血液動力學、血液流變學改變及其相互關系.方法采用美國AcusoN-128XP/10彩色多普勒成像(CDI)技術檢測23例CRCO患者和23例正常人CRA.OA血液動力學及血液流變學改變.結果 CRVO患者CRA收縮期最大血流速度(Vmax)比對側眼(P＜0.05)及對照眼(P＜0.01)下降,舒張末期最小血流速度(Vmin)比對側眼及對照組顯著性增高(P＜0.05),阻力指數(RI)比對側眼(P＜0.05)及對照組(P＜0.01)增高.低切率全血比粘度較對照組顯著性增高(P＜0.01),并與CRAO患者Vmax(r=-0.641 P＜0.01)、Vmin(r=-0.538 P＜0.01)成負相關.結論 CRVO患眼CRA的CDI參數异常,表明動脈血流速度的下降與CRVO發病相關,CRA供血减少是引起視網膜損害的主要原因之一.低切率全血比粘度增高是導致CRVO患眼CRA血流下降因素之一.     

Hyperhomocysteinemia and central retinal vein occlusion in Iranian population

Purpose To evaluate total plasma homocysteine level during the acute phase of central retinal vein occlusion (CRVO) in the Iranian population and determine whether hyperhomocysteinemia is also a risk factor for CRVO. Methods Fifty-four patients with recently diagnosed CRVO were studied. Their fasting total plasma homocysteine level was compared with a matched control group of 51 patients evaluated in the same clinic for a non-retinal disease diagnosis. Results The mean total plasma homocysteine level was 14.76 ± 7.67 μmol/l in cases, and 11.42 ± 3.74 μmol/l in control subjects. It showed a significant difference (P = 0.005) in mean plasma homocysteine level between cases and control group. Odds ratio of CRVO for individuals with hyperhomocysteinemia was 2.88 (95% CI = 1.08−7.71 and P = 0.03). The overall multivariable-adjusted odds of CRVO in participants with plasma homocysteine level above 15 μmol/l was 4.71 (95% CI = 1.46−15.19 and P = 0.009) Hyperhomocysteinemia was not statistically different in each age group (< 60 years: 27%, 61−70 years: 33.3%, 71−80 years: 31.6%, > 81 years: 33.3%, Chi-square test, P = 0.98). Conclusion Elevated total plasma homocysteine level is an independent risk factor for CRVO in Iranian population. In addition to an evaluation of all conventional cardiovascular risk factors, measurement of total homocysteine for evidence of hyperhomocysteinemia may be important in the initial investigation and management of patients with CRVO.