Do any Doctors respond to the comments and questions that come up here?

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tony posted on Thu, Nov 10 2011 4:59 PM

The blurriness associated with coming down from a long term high BG level of 419 to normal range. Is this temporary or does it disappear after a time

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mariazhang replied on Thu, Nov 10 2011 11:33 PM

EYE PROBLEM is very common and occurs in nearly half of diabetics.  When your blood sugar is not under control, there will not be enough oxygen and nutrition supply to your eyes, causing damage to the walls of blood vessels in the retina. This change will lead to blocking of your vision and even result in blindness in some severe cases. when your blood glucose level is calm down, there will be a little relief, but as time goes by, your eye condition will get worse, so you need daily care for your eye.

no one  deserves the illnessDevil

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amrad replied on Fri, Nov 11 2011 8:45 PM

What do you mean by long term?

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Suggested by MTynerOD

Diabetes causes more than one sort of problem with vision. The blurriness you describe is inconvenient but not dangerous to your vision. It happens because very high glucose levels filter into the aqueous humor (the clear fluid surrounding the crystalline lens inside your eye.) The thick, syrupy fluid draws water out of the lens by osmotic pressure, causing it to shrink. This makes some people get temporarily more farsighted (trouble up close) and others get more nearsighted (trouble far away), depending on your individual anatomy. But in both cases, the trouble almost always disappears after your BG comes back down. It probably takes a few days of elevated BG to develop and can take 1-4 weeks of normal BG to resolve.

These osmotic vision changes can happen any time your BG is very high, and sometimes they are the first diabetes symptom to be recognized. But this type of blurry vision is almost always temporary.

The other type of vision problem doesn't produce "blur" exactly, but it deserves mention because it is so much more dangerous. Diabetic retinopathy occurs when chronically elevated blood sugar causes the bloodstream to grow new branches to deliver more oxygen to the retina. The new branches tend to leak and break open, causing bleeding into the retina, then scarring that steals away parts of your vision, permanently, a little at a time. These new blind spots (visual field defects) are permanent, and may be unnoticed because your brain fills in the missing parts. Unless the defects are in the center of your vision (as in diabetic macular edema,) they aren't usually reported as "blur."

Both these vision problems are detected by regular visits to the eye doctor (ophthalmologist or optometrist.) Internists and endocrinologists recommend dilated examinations once a year because it is difficult to detect these vision changes in routine medical examinations.


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