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Keep Your Eyes Healthy
Too much glucose (sugar) in the blood for a long time can cause complications. This high blood glucose (also called blood sugar) can damage many parts of the body, including the eyes.
What can I do to prevent diabetes eye problems?
Keep your blood glucose and blood pressure as close to normal as you can.
Have an eye doctor examine your eyes once a year. Have this exam even if your vision is OK. The eye doctor will use drops to make the black part of your eyes (pupils) bigger. This is called dilating your pupil, which allows the doctor to see the back of your eye. Finding eye problems early and getting treatment right away will help prevent more serious problems later on.
How can diabetes hurt my eyes?
Retina (REH-ti-nuh). The retina is the lining at the back of the eye. The retina's job is to sense light coming into the eye.
Vitreous (VIH-tree-us). The vitreous is a jelly-like fluid that fills the back of the eye.
Lens. The lens is at the front of the eye and it focuses light on the retina.
Optic nerve. The optic nerve is the eye's main nerve to the brain.
How can diabetes hurt the retinas of my eyes?
Retina damage happens slowly. Your retinas have tiny blood vessels that are easy to damage. Having high blood glucose and high blood pressure for a long time can damage these tiny blood vessels.
First, these tiny blood vessels swell and weaken. Some blood vessels then become clogged and do not let enough blood through. At first, you might not have any loss of sight from these changes. This is why you need to have a dilated eye exam once a year even if your sight seems fine.
One of your eyes may be damaged more than the other. Or both eyes may have the same amount of damage.
Diabetic retinopathy (REH-tih-NOP-uh-thee) is the medical term for the most common diabetes eye problem.
What happens as diabetes retina problems get worse?
You may see floating spots or almost total darkness. Sometimes the blood will clear out by itself. But you might need surgery to remove it.
Over the years, the swollen and weak blood vessels can form scar tissue and pull the retina away from the back of the eye. If the retina becomes detached, you may see floating spots or flashing lights.
You may feel as if a curtain has been pulled over part of what you are looking at. A detached retina can cause loss of sight or blindness if you don't take care of it right away.
Call your doctor right away if you are having any vision problems or if you have had a sudden change in your vision.
What can I do about diabetes retina problems?
Your eye doctor may suggest laser treatment, which is when a light beam is aimed into the retina of the damaged eye. The beam closes off leaking blood vessels. It may stop blood and fluid from leaking into the vitreous. Laser treatment may slow the loss of sight.
If a lot of blood has leaked into your vitreous and your sight is poor, your eye doctor might suggest you have surgery called a vitrectomy (vih-TREK-tuh-mee). A vitrectomy removes blood and fluids from the vitreous of your eye. Then clean fluid is put back into the eye. The surgery often makes your eyesight better.
How do I know if I have retina damage from diabetes?
Does diabetes cause other eye problems?
A cataract (KA-ter-act) is a cloud over the lens of your eye, which is usually clear. The lens focuses light onto the retina. A cataract makes everything you look at seem cloudy. You need surgery to remove the cataract. During surgery your lens is taken out and a plastic lens, like a contact lens, is put in. The plastic lens stays in your eye all the time. Cataract surgery helps you see clearly again.
Glaucoma (glaw-KOH-muh) starts from pressure building up in the eye. Over time, this pressure damages your eye's main nerve--the optic nerve. The damage first causes you to lose sight from the sides of your eyes. Treating glaucoma is usually simple. Your eye doctor will give you special drops to use every day to lower the pressure in your eye. Or your eye doctor may want you to have laser surgery.
For More Information
To find an eye doctor near you, ask your doctor for a recommendation, contact a nearby hospital or medical school, or call a state or county association of ophthalmologists or optometrists.
Look for the American Academy of Ophthalmology on the Internet at www.aao.org and click on "Find an Eye M.D."
Look for the American Optometric Association on the Internet at www.theaoa.org and click on the public website and then "Dr. Locator" or call the AOA Diabetes Hot Line at 1-800-262-3947.
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