Is Blurry Vision a Serious Sign of Diabetes? Your Symptoms

Is having blurred vision already considered a severe case of diabetes?

Three days ago, I suddenly experienced extreme thirst and a bitter taste in my mouth, and no amount of water could quench my thirst.
I have also been urinating frequently.
Two days ago, I noticed that I was feeling lethargic during the day due to frequent urination at night, and my vision became slightly blurred.
Today, a friend mentioned that I have lost weight, and I feel very weak.
Since I work in a mountainous area, I won't be able to get tested for a few days.
However, after researching online, I suspect that I might have diabetes, especially since both of my parents have diabetes, and I am overweight (85 kg, 175 cm) with a lack of exercise.
I would like to know if the blurred vision indicates a serious condition and if treatment can restore my vision, or if I need to get a new pair of glasses.

Ren Sheng Bian Hei Bai Le, 30~39 year old female. Ask Date: 2008/07/25

Dr. Shi Guangzhong reply Internal Medicine

From your letter, I understand that you are experiencing the three P's: polyuria (excessive urination), polydipsia (excessive thirst), and polyphagia (excessive hunger), along with general weakness and blurred vision.
These are symptoms of hyperglycemia, and you likely have diabetes.
I recommend that you visit the endocrinology department at a hospital as soon as possible for a thorough examination to confirm the diagnosis and initiate early treatment.

Currently, due to your high blood sugar levels, you are experiencing blurred vision.
You do not need to get glasses right now; it is advisable to wait until after you receive medical attention and your blood sugar is stabilized, at which point your vision should return to normal.
However, I also suggest that you see an ophthalmologist during your visit, as we are concerned that hyperglycemia could lead to diabetic retinopathy, and you will need to have regular retinal examinations.
Since you are unable to go down the mountain for medical care, controlling your diet is extremely important.
Although you may feel very thirsty and need to drink a lot of water, you must avoid sugary drinks, including soda, cola, and root beer, as these will further elevate your blood sugar levels and exacerbate your symptoms.
Therefore, your diet should be light, low in sugar and fat, and high in fiber.
As your blood sugar gradually decreases and stabilizes, exercise will become increasingly important, and managing your weight will also be essential.

Reply Date: 2008/07/25

More Info

Blurry vision can indeed be a serious sign of diabetes, particularly if it is accompanied by other symptoms such as excessive thirst, frequent urination, fatigue, and unexplained weight loss. These symptoms collectively suggest the presence of hyperglycemia (high blood sugar), which is a hallmark of diabetes. Given your family history of diabetes and your current symptoms, it is crucial to take these signs seriously.

When blood sugar levels are elevated, it can lead to changes in the lens of the eye, causing blurry vision. This occurs because high glucose levels can cause the lens to swell, altering its shape and affecting the ability to focus. In many cases, once blood sugar levels are brought back into a normal range through appropriate treatment, vision can improve. However, if high blood sugar persists, it can lead to more serious complications, including diabetic retinopathy, which is damage to the blood vessels in the retina and can lead to permanent vision loss.

Your symptoms of increased thirst and urination, along with fatigue and weight loss, align with the classic symptoms of diabetes, often referred to as the "three P's": polyuria (frequent urination), polydipsia (excessive thirst), and polyphagia (increased hunger). The fact that you have noticed weight loss, despite feeling fatigued, is particularly concerning and warrants immediate medical attention.

It is important to consult a healthcare professional as soon as possible to undergo blood tests that can confirm a diabetes diagnosis. These tests typically include fasting blood glucose levels and HbA1c (glycated hemoglobin) tests. A fasting blood glucose level of 126 mg/dL or higher, or an HbA1c of 6.5% or higher, typically indicates diabetes.

In the meantime, managing your diet and lifestyle can play a significant role in controlling blood sugar levels. Focus on a balanced diet rich in whole grains, lean proteins, healthy fats, and plenty of fruits and vegetables. Avoid sugary drinks and high-carb foods that can spike blood sugar levels. Regular physical activity is also crucial; even moderate exercise can help improve insulin sensitivity and lower blood sugar levels.

If you are unable to see a doctor immediately, monitor your symptoms closely. If your vision worsens or if you experience any additional concerning symptoms, seek medical attention right away. While it may be tempting to consider getting new glasses for your blurry vision, it is essential to address the underlying cause first—your blood sugar levels.

In summary, blurry vision can be a serious indicator of diabetes, especially when accompanied by other symptoms. It is vital to seek medical evaluation and treatment promptly to prevent potential complications and to restore your health. Remember, early intervention can make a significant difference in managing diabetes and maintaining overall well-being.

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