Risk factors for hemiretinal vein occlusion: comparison with risk factors for central and branch retinal vein occlusion

Sperduto, Robert D.; Hiller, Rita; Chew, Emily Y.; Seigel, Daniel; Blair, Norman P.; Burton, Thomas C.; Farber, Marilyn D.; Gragoudas, Evangelos S.; Haller, Julia A.; Seddon, Johanna M.; Yannuzzi, Lawrence A.

doi:10.1016/s0161-6420(98)95012-6

Cited by 166 publications

(109 citation statements)

References 17 publications

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“…1-4 Studies evaluating predictors of RVO have consistently shown an association with risk factors for atherosclerosis such as hypertension, dyslipidemia, and diabetes 4,5 as well as ocular comorbidities such as glaucoma; 5,6 conversely, it has been suggested that the presence of RVO in patients under 70 years of age might be associated with increased cardiovascular mortality.…”

Section: Introductionmentioning

confidence: 99%

Low molecular weight heparin for the treatment of retinal vein occlusion: a systematic review and meta-analysis of randomized trials

Lazo‐Langner

Hawel²,

Ageno³

et al. 2010

Haematologica

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Retinal vein occlusion is a frequent cause of visual loss for which few effective therapies are available. Anticoagulation with low molecular weight heparin might be of value in its treatment. We conducted a systematic review and meta analysis of randomized trials evaluating the effect of low molecular weight heparin in patients with retinal vein occlusion. Data sources included MEDLINE, EMBASE, HealthSTAR, the Cochrane Library, Lilacs, the Investigative Ophthalmology and Visual Science database and gray literature. Main outcome was the mean difference between the visual acuity measured at baseline and at six months expressed in the logMAR scale. Secondary outcome was a composite of any adverse ocular outcome including: worsening of visual acuity, visual fields or fluorescein angiography, or development of iris neovascularization, any neovascularization or neovascular glaucoma. Subgroup analyses for branch versus central retinal vein occlusion were conducted. We identified 1,084 references of which 3 studies comparing low molecular weight heparin with aspirin (229 evaluable patients) were included. Overall, the pooled mean visual acuity difference was -0.23 logMAR (95% CI -0.38, -0.09; P=0.002) in favor of low molecular weight heparin. Low molecular weight heparin was associated with a 78% risk reduction for developing any adverse ocular outcome (pooled RR 0.22; 95% CI 0.10, 0.46; P<0.001). In subgroup analyses benefits seemed lower in branch retinal vein occlusion. No increased vitreous hemorrhages were observed. In patients with retinal vein occlusion treatment with low molecular weight heparin seems to be associated with improvement in the visual acuity and less adverse ocular outcomes. These benefits might differ in patients with central as opposed to branch retinal vein occlusion. Further studies are required to confirm these findings and clarify its benefits in specific subgroups of patients before definitive recommendations can be made. IntroductionRetinal vein occlusion (RVO) is a common and important cause of visual loss. In population-based studies its prevalence has been reported to be around 0.6% and up to 4.6% in patients 80 years old or older with a 10-15 year cumulative incidence ranging between 1.6 and 1.8%.1-4 Studies evaluating predictors of RVO have consistently shown an association with risk factors for atherosclerosis such as hypertension, dyslipidemia, and diabetes 4,5 as well as ocular comorbidities such as glaucoma; 5,6 conversely, it has been suggested that the presence of RVO in patients under 70 years of age might be associated with increased cardiovascular mortality.7 In contrast, the association between RVO and thrombophilic risk factors for venous thrombosis, such as factor V Leiden, prothrombin G20210A, and deficiencies of antithrombin, protein C and protein S seems to be weak at best. The exceptions are hyperhomocysteinemia and the presence of antiphospholipid antibodies which are associated with an odds ratio (OR) for developing RVO of 8.9 and 3.9, respectively. 8 Long-term...

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Section: Introductionmentioning

confidence: 99%

Low molecular weight heparin for the treatment of retinal vein occlusion: a systematic review and meta-analysis of randomized trials

Lazo‐Langner

Hawel²,

Ageno³

et al. 2010

Haematologica

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“…66 Several studies have demonstrated that systemic hypertension is associated with an increased risk of developing central, branch and hemi-central retinal vein occlusions. [68][69][70] Systemic hypertension was also found to be associated with branch macular vein occlusions in younger patients. 71 A recent study 72 found a significantly higher prevalence of arterial hypertension in branch retinal vein occlusion compared with central and hemi-central retinal vein occlusion.…”

Section: Retinal Vein Occlusionmentioning

confidence: 94%

Hypertension and the eye: changing perspectives

et al. 2002

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Systemic hypertension is a common condition associated with significant morbidity and mortality. Hypertension confers cardiovascular risk by causing target-organ damage that includes retinopathy in addition to heart disease, stroke, renal insufficiency and peripheral vascular disease. The recognition of hypertensive retinopathy is important in cardiovascular risk stratification of hypertensive individuals. This review reevaluates the changing perspectives in the pathophysiology, classification and prognostic significance of fundal lesions in hypertensives.

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“…RVO has often been associated with a variety of systemic vascular disorders including arterial hypertension, arteriosclerosis, diabetes mellitus, dyslipidemia, and systemic vasculitis (The Eye Disease Case-Control Study Group, 1993Group, , 1996Koizumi et al, 2007;Mitchell et al, 1996;Sperduto et al, 1998). The increased rigidity of arterial wall affiliated with these diseases may result in compression of retinal veins.…”

Section: Risk Factors Of Rvomentioning

confidence: 99%

Retinal Vein Occlusion Induced by a MEK Inhibitor - Impact of Oxidative Stress on the Blood-Retinal Barrier

Yang¹,

Huang²

2012

Oxidative Stress and Diseases

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Risk factors for hemiretinal vein occlusion: comparison with risk factors for central and branch retinal vein occlusion

Cited by 166 publications

References 17 publications

Low molecular weight heparin for the treatment of retinal vein occlusion: a systematic review and meta-analysis of randomized trials

Low molecular weight heparin for the treatment of retinal vein occlusion: a systematic review and meta-analysis of randomized trials

Hypertension and the eye: changing perspectives

Retinal Vein Occlusion Induced by a MEK Inhibitor - Impact of Oxidative Stress on the Blood-Retinal Barrier

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