What are the risk factors?
Risk factors for Hypertensive Retinopathy
Risk factors for hypertensive retinopathy include chronic hypertension or high blood pressure, especially if the condition is not well controlled. ​

Risk factors for Retinal Vein Occlusion (RVO)
Risk factors for RVO include:

• Older age
• Hypertension or high blood pressure
• Diabetes mellitus
• High cholesterol
• Cardiovascular disease
• Cigarette smoking
• Bleeding or clotting disorders
• Vasculitis and autoimmune disorders
• Use of oral contraceptive pills
  
  

Risk factors for Retinal Artery Occlusion (RAO)
Risks factors for RAO include smoking, hypertension, high cholesterol, diabetes, coronary heart disease and a history of stroke. About 75% of CRAO cases occur in those with hypertension or blocked arteries in the heart.