Risk Factors for Central and Branch Retinal Vein Occlusion: A Meta-Analysis of Published Clinical Data

Table 1

Systemic and ocular risk factors for RVO [5, 7].

Systemic risk factors	Ocular risk factors
Hypertension	Glaucoma
Diabetes mellitus	Decreased ocular perfusion pressure
Hyperlipidemia	External retrobulbar compression-orbital neoplasma and endocrine orbitopathy
Atherosclerotic associated diseases: ischemic heart disease, obesitas (high body mass index), and cigarette smoking	Retinal arteriolar signs-focal arteriolar narrowing and arteriovenous nicking
Systemic vasculitis: systemic lupus erythematosus, sarcoidosis, and syphilis
Hematologic neoplasia: polycythaemia vera, multiple myeloma, and leukemia
Hypercoagulation diseases: antifosfolipid syndrome and protein S deficiency
Drug therapy: oral contraceptives, diuretics, and hypotensive drugs