Radial optic neurotomy for ischaemic central vein occlusion

Martinez-Jardon, C.S.; Regil, Armando Meza-de; Dalma-Weiszhausz, José; Leizaola–Fernandez, C.; Morales-Cantón, Virgilio; Guerrero-Naranjo, José Luis; Quiroz‐Mercado, Hugo

doi:10.1136/bjo.2004.048181

Cited by 43 publications

(30 citation statements)

References 16 publications

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“…Similarly, Binder et al [60] reported that patients with nonischemic CRVO may respond more favorably than patients with ischemic CRVO after performing RON. Moreover, while improvements in visual acuity after RON have been confirmed by several other reports [61][62][63][64] , some studies found a resolution of macular edema that was not accompanied by an improvement in visual acuity in all eyes following RON [65,66] . On the other hand, some studies revealed that RON induce the development of retinochoroidal shunt vessels in 46.7-83.3% of patients and this may represent the mechanism of any beneficial effect this surgical procedure [67][68][69][70][71] .…”

supporting

confidence: 49%

“…Although RON has been proposed as safe by most authors, complications of the procedure should not be overlooked. Complications of RON include vitreous haemorrhage, retinal detachment, various visual field defects, choroidal neovascularization at the neurotomy site, central retinal artery occlusion, globe perforation and anterior segment neovascularizaiton [56,62,66,[75][76][77] . In summary, RON may be effective as a result of these possible pathophysiological mechanisms: relaxing the confined scleral outlet, inducing the formation of chorioretinal shunt vessels and the additive positive effects of PPV.…”

mentioning

confidence: 99%

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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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supporting

confidence: 49%

mentioning

confidence: 99%

Fibrinolytic and Surgical Treatment Approaches for Retinal Vein Occlusion

Tekin¹,

Teke²,

İnanç³

2016

International Journal of Ophthalmic Research

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“…171 For patients with ischemic CRVO, mfERG has also been used to evaluate the retinal functional changes following radial optic neurotomy (RON). 189 It was shown that RON did not improve visual function in terms of mfERG changes despite a reduction in macular thickness. mfERG can therefore provide an alternative measure of macular function in additional to other traditional outcome such as visual acuity and fluorescein angiography.…”

Section: Arteriovenous Decompression and Radial Optic Neurotomy For Rmentioning

confidence: 99%

The Clinical Applications of Multifocal Electroretinography: A Systematic Review

Lai

Chan

Lai

et al. 2007

Survey of Ophthalmology

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Abstract. Multifocal electroretinography (mfERG) is an investigation that can simultaneously measure multiple electroretinographic responses at different retinal locations by cross-correlation techniques. mfERG therefore allows topographic mapping of retinal function in the central 40--50 of the retina. The strength of mfERG lies in its ability to provide objective assessment of the central retinal function at different retinal areas within a short duration of time. Since the introduction of mfERG in 1992, mfERG has been applied in a large variety of clinical settings. This article reviews the clinical applications of mfERG based on the currently available evidence. mfERG has been found to be useful in the assessment of localized retinal dysfunction caused by various acquired or hereditary retinal disorders. The use of mfERG also enabled clinicians to objectively monitor the treatment outcomes as the changes in visual functions might not be reflected by subjective methods of assessment. By changing the stimulus, recording, and analysis parameters, investigation of specific retinal electrophysiological components can be performed topographically. Further developments and consolidations of these parameters will likely broaden the use of mfERG in the clinical setting.

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“…The precise mechanism of action of this method remains under discussion. It is frequently hypothesized that RON leads to an improvement of hemodynamics in the retinal vessels by releasing the compression of the intranerval vessels at the level of the lamina cribrosa [6]. The aim of the present study is to follow this hypothesis and to elucidate if RON has a detectable effect on ocular hemodynamics and, if so, whether this effect could serve as a predictor for visual outcome after surgery.…”

Section: Introductionmentioning

confidence: 99%

“…It is unclear whether this swelling is the consequence of the vein occlusion or if it is the primary lesion leading to the clinical picture of a hemorrhagic infarction of the retina [1]. Some reports on RON are encouraging although this therapy is still a subject of further discussion [4,6]. The precise mechanism of action of this method remains under discussion.…”

Section: Introductionmentioning

confidence: 99%

Radial Optic Neurotomy in Central Retinal Vein Occlusion Does Not Influence Ocular Hemodynamics

et al. 2010

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Purpose: Radial optic neurotomy (RON) is used for the treatment of central retinal vein occlusion. Its effects on visual acuity differ substantially between patients. Our study aims to evaluate if RON has an impact on ocular microcirculation and if analysis of ocular microcirculation might serve as a predictor for surgical success. Procedures: A complete ophthalmologic examination including color Doppler imaging of the retrobulbar vessels was performed before and 2–4 months after RON in 12 patients. Results: Mean visual acuity was 0.09 ± 0.03 prior to and 0.24 ± 0.12 after RON. Visual acuity improved in 7 (+3.5 ± 0.9 lines), was stable in 3 (±0 lines) and worsened in 2 cases (–6 and –2 lines). Doppler parameters were not affected by RON, and no correlations between visual acuity and perfusion parameters were found. Conclusions: Our data indicate that RON does not influence ocular microcirculation. None of the assessed hemodynamic parameters appears to be a predictor for surgical success.

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Radial optic neurotomy for ischaemic central vein occlusion

Cited by 43 publications

References 16 publications

Fibrinolytic and Surgical Treatment Approaches for Retinal Vein Occlusion

Fibrinolytic and Surgical Treatment Approaches for Retinal Vein Occlusion

The Clinical Applications of Multifocal Electroretinography: A Systematic Review

Radial Optic Neurotomy in Central Retinal Vein Occlusion Does Not Influence Ocular Hemodynamics

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