Diabetic Retinopathy

What Is Diabetic Retinopathy?

Diabetic retinopathy is a complication of diabetes that affects the eyes. It occurs when high blood sugar levels cause damage to the blood vessels in the retina—the light-sensitive tissue at the back of the eye. Over time, these damaged vessels can leak fluid or bleed, distorting vision. In advanced stages, new abnormal blood vessels may grow, leading to further vision problems.

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Clinician examines an elderly patient’s eye with an ophthalmoscope in a clinic setting

Causes and Risk Factors

The primary cause of diabetic retinopathy is prolonged high blood sugar levels. Risk factors include:

  • Duration of Diabetes: The longer you have diabetes, the higher the risk.
  • Poor Blood Sugar Control: Increases the likelihood of developing retinopathy.
  • High Blood Pressure and Cholesterol: Can exacerbate the condition.
  • Pregnancy: Can increase the risk of diabetic retinopathy.
  • Tobacco Use: Smoking can contribute to the progression of the disease.

Symptoms

In the early stages, diabetic retinopathy may not present noticeable symptoms. As the condition progresses, symptoms can include:

  • Spots or dark strings floating in your vision (floaters)
  • Blurred or fluctuating vision
  • Impaired color visionDark or empty areas in your vision
  • Vision loss
Doctor examining an elderly patient’s eye with a gloved hand
Elderly man having an eye exam while gloved hands adjust his glasses

Diagnosis

Early detection through regular eye exams is crucial. Diagnostic procedures may include:

  • Dilated Eye Exam: Allows the doctor to examine the retina and optic nerve for signs of damage.
  • Fluorescein Angiography: Involves injecting a dye into your arm to highlight blood
  • Optical Coherence Tomography (OCT): Provides detailed images of the retina’s thickness to detect swelling.University of Miami Health System+1University of Miami Health System+1 vessels in the eye.

Treatment Options

Treatment depends on the severity of the condition:

Medical Management

  • Blood Sugar Control: Maintaining healthy blood sugar levels can slow the progression.
  • Blood Pressure and Cholesterol Management: Helps reduce the risk of vision loss.

Medications

  • Anti-VEGF Injections: Medications like ranibizumab or aflibercept can reduce swelling of the macula and slow vision loss.
  • Steroid Injections: May be used to reduce inflammation.

Laser Treatment

  • Focal Laser Treatment: Seals or shrinks leaking blood vessels.
  • Panretinal Photocoagulation: Shrinks abnormal blood vessels.


A surgical procedure that removes blood from the vitreous and scar tissue from the retina.

When to Seek Medical Attention

If you experience sudden vision changes, such as blurriness, spots, or flashes of light, contact an eye care professional immediately. Regular comprehensive eye exams are essential for individuals with diabetes to detect diabetic retinopathy early and prevent vision loss.

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I had a wonderful experience at American Eye Care Center. The staff was welcoming, knowledgeable, and truly cared about my vision.

The team was very professional and made me feel comfortable throughout my visit. The staff was friendly, and the eye exam was thorough and easy to understand.

Great experience from start to finish. The doctors took the time to answer all my questions and provided excellent care.

I had a wonderful experience at American Eye Care Center. The staff was welcoming, knowledgeable, and truly cared about my vision.

The team was very professional and made me feel comfortable throughout my visit. The staff was friendly, and the eye exam was thorough and easy to understand.