The distribution of angioarchitectural changes within the vicinity of the arteriovenous crossing in branch retinal vein occlusion

Kumar, B.; Yu, Dao‐Yi; Morgan, William H.; Barry, C.J.; Constable, Ian J.; McAllister, Ian L.

doi:10.1016/s0161-6420(98)93022-6

Cited by 88 publications

(45 citation statements)

References 13 publications

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“…This results in injury to the vascular endothelium, and secondary thrombotic occlusion. [1][2][3][4][5][6][7] Dissection of the adventitial sheath of the arteriovenous crossing to eliminate the primary cause of BRVO was performed in one patient by Osterloh and Charles in 1988. 8 Eleven years later, Opremcak and Bruce 9 reported favourable results with sheathotomy in 15 eyes with BRVO.…”

Section: Discussionmentioning

confidence: 99%

“…1,2 In the past, several reports have confirmed the hypothesis that the arteriovenous crossing site is a causative factor in vein occlusion. [3][4][5][6][7] It has been established that at the arteriovenous crossing site, the arteriole lies over the vein in 97-99% of patients with BRVO while it only lies over it in 55-70% of normal subjects. 7 As the majority of patients with BRVO have systemic arterial hypertension, the arteriole at the crossing site has hypertrophy of the medial layer of its wall and wall thickening, which results in compression of the underlying venule.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of arteriovenous crossing sheathotomy for decompression of branch retinal vein occlusion

Avcı

İnan

Kaderli

2006

Eye

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Purpose To report the effects of arteriovenous adventitial sheathotomy on anatomical and functional improvements in patients with macular oedema due to branch retinal vein occlusion (BRVO). Methods Pars plana vitrectomy and arteriovenous sheathotomy was performed on 11 patients with BRVO who had vision loss due to macular oedema. Ten patients with macular oedema due to BRVO and who have been treated with grid laser photocoagulation were included in the control group. The measurement of visual acuity with ETDRS chart was taken preoperatively and at 1, 3, 6, and 9 months follow-up in the study group and at 1, 3, 6, and 9 months after grid laser in the control group. Results The mean preoperative logMAR visual acuity was 0.8470.3 in the surgical group and 1.0670.4 in the control group. The postoperative mean logMAR visual acuity was 0.4170.2, 0.4070.2, 0.4070.3, and 0.3670.3 at 1, 3, 6, and 9 months follow-up, respectively. In the control group the postlaser mean logMAR visual acuity was 0. 9270.3, 0.8770.4, 0.8570.3, and 0.8270.3 at 1, 3, 6, and 9 months follow-up, respectively. The improvements of visual acuity in both groups were statistically significant when compared to pretreatment (P ¼ 0.003 and P ¼ 0.007 at 9 months in the study and control group, respectively). Conclusion Arteriovenous sheathotomy for decompression of BRVO in patients who have vision loss due to macular oedema was safe and effective for anatomical and functional improvement and resulted in significantly better visual outcomes than a matched control group of laser-treated eyes.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of arteriovenous crossing sheathotomy for decompression of branch retinal vein occlusion

Avcı

İnan

Kaderli

2006

Eye

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“…[45][46][47] . An artery which is affected by hypertensive and atherosclerotic changes leads to compression, venous turbulence, endothelial damage, and secondary thrombosis.…”

Section: Arteriovenous Sheathotomymentioning

confidence: 99%

Fibrinolytic and Surgical Treatment Approaches for Retinal Vein Occlusion

Tekin¹,

Teke²,

İnanç³

2016

International Journal of Ophthalmic Research

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Retinal vein occlusion (RVO) is the second most common vascular disease after diabetic retinopathy. Although its high frequency, mechanisms underlying RVO and optimal treatment strategies are still controversial. There are various treatment modalities for retinal vein occlusion including observation, systemic treatments, intravitreal agents, laser photocoagulation, fibrinolytic treatment and surgical approaches. Despite most of the treatment strategies are directed at secondary complications of RVO that affect vision including macular edema and retinal neovascularization, some treatment options also have the ability to create a bypass around the obstructed retinal vein and to decrease the raised venous hydrostatic pressure. The aim of this review is to describe the outcomes of fibrinolytic and surgical treatment modalities for RVO.

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“…From the anatomic point of view, the arteriole and the venule share a common adventitial sheath at the arteriovenous crossing. Thus, the arteriosclerosis and the mechanical compression of the arterial vessel especially related to hypertension bring about a narrowing of the venous lumen, with subsequent endothelial damage and thrombosis [5]. Histological studies have demonstrated the importance of the arteriovenous crossing in the pathogenesis of the major BRVO site [6], where a thrombus may rarely be biomicroscopically detectable [7].…”

Section: Definitionmentioning

confidence: 99%

“…The thickened and rigid arteriosclerotic arterial wall compresses the vein, resulting in turbulence in the blood flow and endothelial damage leading to the formation of the occlusion [5, 6]. A decompression at the arteriovenous crossing site can theoretically be effective in treating the pathogenetic mechanism by improving the venous blood flow.…”

Section: Treatmentmentioning

confidence: 99%

Branch Retinal Vein Occlusion: Classification and Treatment

Parodi

Bandello²

2009

Ophthalmologica

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Branch retinal vein occlusion (BRVO) refers to a heterogeneous group of disorders with different clinical aspects, courses, and probably therapy. Depending on the site of the arteriovenous crossing, we can roughly divide BRVO into 3 main groups: major BRVO, hemispheric retinal vein occlusion, and macular BRVO. Main treatment options include laser treatment, corticosteroid administration, anti-VEGF drugs, and sheathotomy with or without vitrectomy. Laser photocoagulation, as demonstrated by the Branch Vein Occlusion Study, represents the gold standard for the treatment of macular edema and ocular neovascularization following BRVO. The limited functional outcomes achievable by means of laser treatment have prompted researchers to try alternative options, with varying results. The recent introduction of combined therapies for macular edema may provide a superior approach in an attempt to improve and stabilize visual acuity over a long-term follow-up.

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The distribution of angioarchitectural changes within the vicinity of the arteriovenous crossing in branch retinal vein occlusion

Cited by 88 publications

References 13 publications

Evaluation of arteriovenous crossing sheathotomy for decompression of branch retinal vein occlusion

Evaluation of arteriovenous crossing sheathotomy for decompression of branch retinal vein occlusion

Fibrinolytic and Surgical Treatment Approaches for Retinal Vein Occlusion

Branch Retinal Vein Occlusion: Classification and Treatment

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