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branch retinal vein occlusion (BRVO)
see retinal vein occlusion
Etiology:
- risk factors [3]
- hypertension
- diabetes mellitus
- heart failure
- cerebrovascular disease
Pathology:
- atherosclerotic retinal arteries
- eyes with arteriovenous crossings appear to be at risk
- artery is anterior to the vein in most of these cases
- artery & vein share a common adventitial sheath
- increased arterial stiffness may be a mechanical factor causing venous thrombosis
- blockage of the small veins that carry blood away from the retina
Clinical manifestations:
- may be asymptomatic or present with scotoma or visual field defect
Related
retinal vein
General
retinal vein occlusion
References
- PubMed Health: Retinal vein occlusion
Central retinal vein occlusion; Branch retinal vein occlusion;
CRVO; BRVO
http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0004583/
- Wu L
eMedicine (Medscape): Branch Retinal Vein Occlusion
http://emedicine.medscape.com/article/1223498-overview
- Bertelsen M et al.
Comorbidity in patients with branch retinal vein occlusion:
Case-control study. BMJ 2012 Nov 30; 345:e7885.
PMID: 23204001
- Medical Knowledge Self Assessment Program (MKSAP) 19.
American College of Physicians, Philadelphia 2022