title: Retinal vein occlusion.
abstract: Retinal vein occlusion can provoke a sudden loss of visual acuity. It is generally unilateral. Risk factors include ageing, arterial hypertension, diabetes and elevated intraocular pressure. Neovascularisation of the retina or iris can occur in patients with macular ischaemia, creating a risk of glaucoma. If macular oedema develops, recovery of visual acuity occurs spontaneously but slowly. Patients must be monitored in order to detect and treat neovascularisation as early as possible. Treatments for macular oedema are disappointing.
mesh_terms: D006801:Humans; D012170:Retinal Vein Occlusion / Q000150:complications / Q000209:etiology / Q000628:therapy*; D012307:Risk Factors; D014792:Visual Acuity