Diabetic retinopathy

What is Diabetic retinopathy?

Diabetic retinopathy is the most common eye condition for people with diabetes.

It is caused by high blood sugar levels damaging the retina. The retina is the light-sensitive layer of cells at the back of the eye that converts light into electrical signals. These signals are sent to the brain which interprets them as the images we see. The retina receives a constant supply of blood through tiny blood vessels. However, over time a consistently high blood sugar level can damage these blood vessels.


How do I know if I have a problem?

Usually there are no symptoms until the condition reaches a later stage, when changes in vision will become noticeable. Anyone diagnosed with diabetes is eligible for a free sight test every year, and in addition to this people with diabetes who are over 12 are invited for free annual retinal screening. During this screening a photograph of the back of the eye will be taken that will show signs of the condition.


What treatment is available?

In the early stages of diabetic retinopathy, no treatment is needed. The condition can be managed by controlling blood sugar levels, blood pressure and cholesterol. When the condition is more advanced, laser surgery is used to shrink the problematic blood vessels. Laser surgery reduces the risk of blindness by up to 90% but it can’t restore any vision that has already been lost. It also works best when it’s performed before the blood vessels have swollen and started leaking fluid, so early detection is vital.


How do I get help?

If you’ve been diagnosed with diabetes it’s important that you have regular eye checks as early detection of diabetic retinopathy is the best way to protect against vision loss. If you’re worried you may have diabetic retinopathy you should visit your optician or doctor at the earliest opportunity.

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