How does Diabetes Damage the Eyes?

Vision Loss

Over time uncontrolled blood sugar and poor circulation can harm the internal structures of the eye.
Blurry or Double Vision
Fluctuating blood sugar and fluctuating vision are connected. A change in glucose levels affects the eye’s ability to maintain sharp focus. It may take several months after your blood sugar is well controlled for your vision to stabilize.
Diabetic Retinopathy
The leading cause of diabetes-related vision loss is diabetic retinopathy. Diabetic retinopathy can damages the network of blood vessels supplying the retina or cause the growth of  abnormal  blood vessels on the retina. When these fragile blood vessels leak, the fluid and blood damage the retina and can cause permanent vision loss.
Cataracts
People with diabetes have a much greater risk for developing cataracts and at an earlier age. A cataract is clouding of the eye’s natural lens and results in the inability to focus light, glare and compromised vision,
Glaucoma
Diabetes also increases your risk of developing glaucoma. Glaucoma causes irreversible damage to the retina and optic nerve. If untreated, this damage leads to vision loss.

Scheduling regular eye exams can help detect diabetes-related eye diseases before they cause irreversible damage.
Exercise, a healthy diet and keeping glucose levels and blood pressure controlled can also help control eye problems.

Diabetic Awareness Month

If you have diabetes, it requires attention every day of the year, not just the month of November. But I am going to take advantage of Diabetes Awareness Month to remind you that your eyes are important and can be significantly impacted by diabetes.
First and most important, keep your blood sugar levels under tight control. In the Diabetes Control and Complications Trial, people on standard diabetes treatment developed retinopathy four times as often as people who kept their blood sugar levels close to normal. In people who already have retinopathy, the condition progressed in the tight-control group only half as often.

Diabetic Retinopathy

These impressive results show that you have a lot of control over what happens to your eyes. Also, high blood sugar levels may make your vision temporarily blurry.

Second, keep blood pressure under control. High blood pressure can make eye problems worse.

Third, quit smoking.

Fourth, see your optometrist at least once a year for a dilated eye exam. Having your regular doctor look at your eyes is not enough.

Fifth, see your optometrist if:

your vision becomes blurry
you have trouble reading signs or books
you see double
one or both of your eyes hurt
your eyes get red and stay that way
you feel pressure in your eye
you see spots or floaters
straight lines do not look straight
you can’t see things to the side as you used to

Don’t procrastinate. If you have diabetes and haven’t had a dilated eye exam in the last 12 months, schedule an eye exam now.