High blood pressure is often called a silent condition because it rarely causes symptoms until damage is done, and the eyes are one of the first places that damage shows. The retina is the only part of the body where doctors can see blood vessels directly, so an eye examination can sometimes reveal a blood pressure problem before any other test. Understanding this connection can protect both your sight and your overall health.
What Hypertension Does to the Eye
When blood pressure stays high, the walls of the small retinal arteries thicken and narrow, and they may begin to leak. Doctors call the resulting changes hypertensive retinopathy. In more severe cases the optic nerve can swell, fluid can collect under the retina, and small areas of the retina can be starved of blood, all of which threaten vision.
High blood pressure also raises the risk of blockages in the retinal arteries and veins, which can cause sudden, painless loss of vision in one eye and is a medical emergency.
Warning Signs Not to Ignore
Mild changes usually cause no symptoms, but the following warrant urgent attention:
- Sudden blurring or loss of vision in one eye
- Double vision or persistent headaches with visual changes
- A reddish tint or dark patches in your field of view
- Eye pain combined with very high blood pressure readings
Keeping Your Eyes and Heart Safe
Controlling blood pressure through medication, a lower-salt diet, regular activity and weight management protects the retina just as it protects the heart and kidneys. A routine dilated eye exam is a valuable check, particularly if you have had high blood pressure for several years. If your optometrist or ophthalmologist notices vascular changes, they may recommend you see your physician to review your blood pressure control.
- Tags:
- BP
- eye care
- Hypertension
