Blurred Vision Diabetes

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Blurred Vision

Tweet One of the common signs of diabetes mellitus is blurred vision, which refers to the loss of sharpness of vision and the inability to see fine details. Blurred vision can affect one eye (unilateral blurred vision) or both (bilateral blurred vision) eyes, and can occur often or rarely. Regardless of how often it occurs, it should never go untreated as it could be an indicator of another, more serious eye problem. Causes of blurred vision Blurred vision can occur by simply forgetting to wear your prescribed corrective lenses. But in many cases, it is usually a sign of an underlying eye disease. Eye diseases include: Age-related macular degeneration High blood sugar levels Other causes of blurry vision include: Cataracts and other eye conditions such as conjunctivitis, dry eye syndrome, and retinal detachment Certain medications (including cortisone, some antidepressants and some heart medications) Diabetes mellitus Migraines Diabetes and blurred vision High levels of blood sugar resulting from diabetes can affect your ability to see by causing the lens inside the eye to swell, which can result in temporary blurring of eyesight. Blurring of vision may also occur as a result of ve Continue reading >>

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Popular Questions

  1. I was just diagnosed with Type 2 and am committed to trying to revers this with diet, exercise and Rx. I am experiencing blurry vision, which my endocrinologist says will go away on its own. Can anybody who's experienced this symptom tell me how long it may take for normal vision to return? Thanks so much!

  2. living_laughing

    Hi Mathew and Welcome! Your endo is correct, your eyesight should return to your normal as your bg stablize. While I didn't experience this myself, from all I've read, it could take a few days or a few weeks. Some of it will depend on how well you stick to your new way of eating and exercise and how well your bg are in control. It will get better! and you'll be glad you're making these changes - even though it's tough right now. Hang in there. You can do this!

  3. t1wayne

    Hi Matthew, and welcome to the ADA forums. Sorry you've joined our little club (TCNWTJ), but glad you found us. The short answer to your query is, "it depends". What it depends on is, how long it takes to get your BG (Blood Glucose) down to near-normal (non-D, or non-Diabetic) levels. Then add a couple days. BUT.. as you improve your BG levels, you'll find the blurriness lessens. In short.. what happens is, the glucose in your blood, which is also in all of your body's tissue and fluids (including your eyeballs' vitreous fluid), is more concentrated than it should be.. and that excess glucose concentration actually alters the shape of your eyeball.
    Picture this: you have a shot glass filled half way (that's 1/2 oz) with water. When you hold the half-filled shot glass over a page of text, you can read the text. Now, add 1 teaspoon of sugar; you can still read the text, but it's harder; now, fill the glass the rest of the way with sugar. You may still be able to read the text, but not as well, and maybe even not. By adding the sugar, you're changing the refractive nature of the liquid. The same thing is happening to your eyeballs... but by getting your BG level back to non-D levels, you'll eliminate the problem. This is one of the more common symptoms of D (of either type). Most folks have experienced it. But in the meantime... don't get a new prescription for glasses. Wait 'till you've got your BG under control. If you have to, get a cheap pair of reading glasses at the drug store.
    Which leads to... what's "controlled" BG mean? Non-D's BG levels run about 90 to 120 mg/dl all day long, with most of the day spent in the 90 to 100 range (or, by another study, below 100 mg/dl for 80% of the day). For D's, the each doc is supposed to provide a "target" range for each patient... but the starting range for them to work off of (per the AACE - the American Association of Clinical Endocrinologists) is 80 to 140 mg/dl. Since BG levels change all the time, it's possible to get yours down to non-D range in fairly short order.. if you put in the effort to achieve it. The low end of that range is the fasting and pre-meal level, the high end is the "peak" after a meal (about an hour after, but it varies - anywhere from 45 to 90 minutes after), and you should be back to the pre-meal level by an hour after the peak.
    There are three things you can do to control BG: "Diet", "Exercise", and medications (or meds). On the meds... you didn't say which one your endo Rx'd. If it's metformin (the most common T2 med)... it will take anywhere from a week to a few weeks to start having an impact on your BG levels. AND... it does NOTHING to actually lower your BG... what it does is prevent your BG from increasing by inhibiting the release of stored glucose from your liver (a normal part of BG control in the body), so it doesn't get even higher. AND... it's REQUIRES the use of "diet" and "exercise" to be effective (don't take my word for it... read the info that came with the med). If you're using another T2 oral med... it still requires the use of "diet" and "exercise".
    "Diet" means CARBOHYDRATE LIMITATION. And carbs are in almost everything... especially processed foods. So start reading labels, and learn about carbs and what they're in. Here's a link to the ADA's intro to the topic: http://www.diabetes.org/food-and-fitness/food/what-can-i-eat/understanding-carbohydrates/carbohydrate-counting.html?referrer=https://www.google.com/
    That's fairly basic, but it's a good start to the concept. Carbs are the primary source of glucose in your diet, so that's why you want to restrict them... it's the most effective step you can take to getting your BG into range.
    The "exercise" step is important because active cells are more receptive to insulin than inactive cells. Getting regular physical activity (even a daily walk will help) improves your cellular sensitivity to the insulin your body produces; insulin's function is to transfer the glucose from your bloodstream into all of the cells of your body, which need it for fuel. You don't have to become a gym rat (though you're welcome to if you'd like!), but you do need to get active on a regular (preferably daily) basis.
    On BG control in general... you MUST perform regular BG testing... not just upon waking, but before and after meals, at least until you've learned how the meals you're eating and activty you're engaging in are affecting your BG levels. One of our members, Alan Shanley, has a great website with great guidance on T2 management... check out these two sections, then everything else:
    Getting Started: http://loraldiabetes.blogspot.com/2006/10/d-day.html
    Testing with Purpose: http://loraldiabetes.blogspot.com/2006/10/test-review-adjust.html
    I hope this helps... and come back with any and all questions. Good Luck!!

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