The kidneys are responsible for filtering blood and maintaining fluid balance in the body, and are closely linked to the circulatory system, including the thin blood vessels that support the eyes. When kidney function begins to decline, it can cause a range of changes affecting vision, eye moisture, and even how people perceive color, according to Times Entertainment (India).
Here are three common eye-related symptoms that may indicate underlying kidney problems, which people should be aware of.

Persistent puffiness around the eyes, especially the eyelids, can be a sign of kidney damage.
ILLUSTRATIVE PHOTO: AI
Persistent eye swelling
Waking up with slightly puffy or swollen eyes after a late night or eating salty food is normal. However, if your eyes remain puffy throughout the day, especially around the eyelids, it could be a sign of proteinuria – a condition where protein leaks into the urine due to kidney damage. This protein loss causes fluid to build up in soft tissues, such as around the eyes.
Swelling of the eyes or other body parts due to kidney-related problems often persists and may be accompanied by other symptoms such as foamy or bubbly urine. If you notice these signs, don't ignore them; see a doctor for a urine test and kidney function check as soon as possible.
Blurred vision or double vision
Sudden changes in vision, such as blurred vision, difficulty focusing, or double vision (seeing one object as two), can be caused by problems with the small blood vessels in the eye. This condition, called retinopathy, is often caused by a variety of factors, including high blood pressure or diabetes. Both of these conditions, if left uncontrolled, are leading causes of chronic kidney disease (CKD), which can then damage the blood vessels in the retina.
This damage can lead to fluid leakage, retinal swelling, or in severe cases, vision loss. If you have high blood pressure or diabetes and frequently experience visual disturbances, monitoring kidney function along with regular eye exams is essential.
Some colors are difficult to identify.
Some people with kidney failure may have difficulty recognizing colors, especially blue and yellow. This could be due to damage to the optic nerve or changes in the retina—resulting from prolonged high blood pressure, diabetes, or urea toxicity (a waste product that builds up in the body due to poor kidney filtration).
Initial eye abnormalities are often difficult to detect, but can progress without obvious symptoms related to kidney problems. In some cases, these problems can mimic common eye conditions, delaying accurate and timely diagnosis. If left untreated, they can worsen, signaling more serious systemic health issues.
If you notice any unusual or persistent changes in your eyes, especially when combined with other signs such as fatigue or swelling, see a doctor immediately. Early detection is key to managing kidney disease and protecting your long-term health, including your vision.
Source: https://thanhnien.vn/3-bieu-hien-o-mat-canh-bao-van-de-ve-than-185250816160040349.htm










