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Written by Dr Serena Jones, GP
Dr Serena graduated from Manchester University in 2008 (MBChB).
She also holds the MRCGP, DRCOG and DFSRH.
High blood pressure (also called hypertension) is one of the most common health problems worldwide. Most people know it raises the risk of heart attacks and strokes, but many are surprised to learn it can also damage your eyes. Left untreated, high blood pressure can cause serious, sometimes permanent, vision problems.
How High Blood Pressure Affects the Eyes
When blood pressure stays high over time, it puts strain on blood vessels throughout the body. In the eyes, this particularly affects the retina, the light-sensitive layer at the back of the eye that is crucial for vision. If the retinal blood vessels become damaged, eyesight can slowly deteriorate—or in some cases, be lost suddenly.
Vision Loss from Hypertension
The most common eye complication of high blood pressure is hypertensive retinopathy. Early stages often have no symptoms, but over time it can cause blurred or reduced vision. Eye doctors may notice different signs when they examine your eyes.
There are other eye conditions that are also linked to poor blood pressure control, and these include:
Retinal vein occlusion: blockage of a vein in the retina, leading to sudden vision loss.
Retinal artery occlusion: sometimes described as a “stroke of the eye,” causing severe and sudden sight loss.
Optic neuropathy: damage to the optic nerve from poor blood supply, which may result in permanent vision loss.
Warning Signs
Because changes often occur quietly, eye damage may go unnoticed until it is advanced. Watch for:
- Blurred or double vision
- Flashes of light or new floaters
- Eye pain or headaches
- Sudden vision loss
Seek medical help immediately if any of these symptoms appear.
Protecting Your Vision
The best way to prevent eye problems from high blood pressure is to keep your blood pressure under control. Steps include:
- Regularly checking your blood pressure at home and with your GP
- Taking prescribed medication consistently
- Following a healthy lifestyle—balanced diet, exercise, weight management, limiting alcohol, and avoiding smoking
- Having routine eye exams, especially if you have hypertension, diabetes, or other health risks
- Eye tests can spot early signs of damage before you notice symptoms, giving doctors a chance to act early.
Conclusion
Managing hypertension not only reduces your risk of heart attack and strokes but also helps safeguard your vision. By monitoring regularly, adopting healthy habits, and keeping up with eye exams, you can reduce the risk of sight loss and enjoy better long-term health.
Kinetik Wellbeing has resources for home monitoring and lifestyle support including a wide range BP monitors which you can see here. You can record your home BP readings on My Blood Pressure which will give you information about what to do next depending on your reading.
