Changes of electroretinogram without improvement of retinal circulation after radial optic neurotomy for central retinal vein occlusion

Sato, Eiju; Yamamoto, Shuichi; Ogata, K.; Kubota, Mariko; Sugawara, Takeshi; Mizunoya, Satoshi

doi:10.1007/s10633-007-9103-8

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…During postoperative observation, vitreous hemorrhage occurred in one case (7.1%), which was completely absorbed within 3 weeks, and subretinal hemorrhage occurred in three cases (21.4%), which were subsequently absorbed (21). Sato et al (28) performed RON on 10 eyes of 10 CRVO patients (including two ischemic and eight nonischemic) after vitrectomy. Compared with the average bestcorrected visual acuity and average fovea thickness before and 3 months after operation, the average amplitudes of A wave and B wave did not change significantly through the analysis of standardized combined electroretinograms (ERGs).Still the B/ A wave ratio increased significantly and the B wave incubation period shortened significantly in six eyes.…”

Section: The Occurrence and Development Of Various Adverse Eventsmentioning

confidence: 99%

Chorioretinal venous anastomosis for non-ischemic retinal vein occlusion

Wang¹,

Wang²,

Wang³

et al. 2022

Front. Ophthalmol.

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Retinal vein occlusion (RVO) refers to the occlusion of the central retinal vein or primary and secondary branches caused by multiple factors. Clinical treatments for it include intravitreal or systemic vasodilator application, local usage of steroids and NSAID (non-steroidal anti-inflammatory drugs), thrombolysis, hemodilution, retinal laser photocoagulation, vitrectomy with vascular sheath incision, chorioretinal venous anastomosis (CRVA), and so on. At present, most treatments are aimed at RVO complications, while chorioretinal vein anastomosis can fundamentally reflux retinal vein blood through the choroid by venous vascular remodeling. Reports on the treatment of retinal vein occlusion by chorioretinal anastomosis are numerous in various countries. As a treatment means, CRVA can drain the venous blood, skipping the thrombosis spot, thus partially relieving anatomical vascular occlusion to achieve a therapeutic purpose. In this study, CRVA is evaluated from the aspects of indications, implementation process, postoperative effect evaluation, complications, and combination with anti-VEGF treatment. Based on the development of laser technology and vitrectomy, we hope to further review this treatment and provide a new reference for the clinical treatment of RVO.

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Section: The Occurrence and Development Of Various Adverse Eventsmentioning

confidence: 99%

Chorioretinal venous anastomosis for non-ischemic retinal vein occlusion

Wang¹,

Wang²,

Wang³

et al. 2022

Front. Ophthalmol.

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“…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] . In addition, several authors suggested that the creation of RON involves a PPV and the beneficial effects of RON are due to this alone [72,73] . Nomoto et al [68] treated 15 eyes with CRVO by performing RON to evaluate the effects of RON on retinal circulation in patients with CRVO by indocyanine green (ICG) videoangiography and a computer-assisted image analysis.…”

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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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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Inverse pattern of photoreceptor abnormalities in retinitis pigmentosa and cone–rod dystrophy

Yokochi

Horiguchi

et al. 2012

Doc Ophthalmol

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PurposeTo determine the characteristics of the photoreceptor abnormalities in retinitis pigmentosa (RP) and cone–rod dystrophy (CRD).MethodsWe evaluated the photoreceptor abnormalities using spectral-domain optical coherence tomography (SD-OCT) in 28 patients with RP and 17 patients with CRD. The OCT images and full-field electroretinograms were obtained from 21 eyes in normal subjects who were age-matched to patients with RP and CRD and served as controls.ResultsEyes with RP and CRD had markedly decreased rod responses (6.5 and 57.5 % of normal value), maximal responses (9.6 and 51.6 %), cone (16.5 and 25.8 %), and 30-Hz flicker responses (17.8 and 30.1 % of normal value), and their P values were smaller than 0.0003. On comparison of ERG data between RP and CRD, they had statistically significant differences in rod responses (P < 0.0003) and maximal responses (P < 0.0003). However, there were no statistical differences in cone response and a weak difference in 30-Hz flicker responses (P < 0.017). The best-corrected visual acuity was −0.03 ± 0.09 (logMAR, mean ± standard deviation [SD]) in eyes with RP, but 0.57 ± 0.54 in eyes with CRD. SD-OCT showed that eyes with RP had an intact reflective line at the junction between the photoreceptor inner and outer segment (IS/OS) at the fovea, while eyes with CRD had no IS/OS. The extent of the central visual field was correlated with the IS/OS length at the macula in eyes with RP.ConclusionThe distribution patterns of the IS/OS line help to differentiate between RP and CRD.

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Changes of electroretinogram without improvement of retinal circulation after radial optic neurotomy for central retinal vein occlusion

Abstract: Significant improvements were observed in the b/a wave ratio of the standard combined ERGs after surgery in eyes with CRVO. The improvement of retinal function was most likely due to improved oxygenation of retina caused by vitrectomy and not by RON.

Cited by 3 publications

References 23 publications

Chorioretinal venous anastomosis for non-ischemic retinal vein occlusion

Chorioretinal venous anastomosis for non-ischemic retinal vein occlusion

Fibrinolytic and Surgical Treatment Approaches for Retinal Vein Occlusion

Inverse pattern of photoreceptor abnormalities in retinitis pigmentosa and cone–rod dystrophy

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