Overview
Diabetic eye disease is a general term for eye problems linked to diabetes. These include diabetic retinopathy, diabetic macular edema, cataracts, and glaucoma. The most common vision-threatening problem is diabetic retinopathy, which affects the retina, the light-sensitive tissue at the back of the eye. Early detection and treatment can help reduce the chance of severe vision loss.
Key Symptoms
Diabetic eye disease may cause no symptoms in its early stages. When symptoms do happen, they can include blurred vision, spots or floaters, dark or empty areas in vision, trouble seeing at night, or vision that changes from day to day. Some people notice colors seem faded. Sudden vision loss needs urgent medical attention.
Causes and Risk Factors
High blood sugar over time can damage the tiny blood vessels in the retina. Risk is higher in people who have had diabetes for many years, have blood sugar that is often above their target range, or also have high blood pressure or unhealthy cholesterol levels. Pregnancy can worsen diabetic retinopathy in some people with diabetes. Smoking may also increase the risk of blood vessel damage.
Who Is Affected
Anyone with type 1 diabetes, type 2 diabetes, or diabetes during pregnancy can develop diabetes-related eye problems, although the pattern of risk can differ. The chance generally rises the longer a person has diabetes. People may still develop eye disease even if their vision seems normal. This is why screening matters for adults of all ages with diabetes.
Prevention
Regular eye screening is one of the most important ways to prevent vision loss from diabetic eye disease. Keeping blood sugar, blood pressure, and cholesterol in a healthy range can help lower the risk or slow worsening. Avoiding smoking may also help protect eye and blood vessel health. Follow-up visits matter because changes can happen without symptoms.
Diagnosis and Tests
An eye care professional may diagnose diabetic eye disease during a dilated eye exam, which allows a clear view of the retina and optic nerve. Testing may also include retinal photographs or imaging that shows swelling or leaking in the retina. Vision testing and eye pressure checks may be part of the exam. If you have diabetes, ask how often you should have a complete eye exam.
Treatment Categories
Treatment depends on which eye problem is present and how advanced it is. Care may include closer monitoring, treatment to reduce retinal swelling or abnormal blood vessel growth, laser procedures, or surgery for some cases. Managing diabetes and related health conditions remains an important part of care. An eye specialist can explain the options and goals of treatment.
Living With It
Living with diabetic eye disease can involve regular monitoring and ongoing medical appointments. Vision changes can affect reading, driving, work, and daily tasks, so it may help to ask about low-vision services or practical supports if needed. Keep a list of any new symptoms and bring it to appointments. Emotional stress is common, and support from family, community, or healthcare teams can help.
When to Seek Medical Care
Seek medical care if you have diabetes and notice blurred vision, new floaters, trouble seeing at night, or any gradual change in sight. Make an appointment promptly if it has been a long time since your last dilated eye exam. Regular screening is important even when your vision seems fine. If you are pregnant and have diabetes, tell your healthcare team because eye monitoring may need to be adjusted.
When It May Be an Emergency
Get urgent medical help for sudden vision loss, a sudden large increase in floaters, flashes of light, a dark curtain over part of your vision, or severe eye pain with vision changes. These symptoms can signal a serious eye problem that needs rapid assessment. Do not drive yourself if your vision is suddenly affected.