Diabetic Retinopathy: Protecting Your Eyes When You Have Diabetes
Diabetic retinopathy is a leading cause of blindness in working-age adults — but with regular screening and good blood sugar control, vision loss is largely preventable.
What Is Diabetic Retinopathy?
Diabetic retinopathy occurs when prolonged high blood sugar damages the tiny blood vessels in the retina, the light-sensitive tissue at the back of the eye. Damaged vessels can leak fluid or blood, swell, or close off entirely, and in advanced stages, abnormal new vessels can grow and bleed into the eye.
Stages of Diabetic Retinopathy
- Mild Non-Proliferative: Small areas of balloon-like swelling (microaneurysms) in the retina's blood vessels.
- Moderate Non-Proliferative: Some blood vessels become blocked.
- Severe Non-Proliferative: More vessels are blocked, depriving areas of the retina of blood supply and signaling the eye to grow new vessels.
- Proliferative Diabetic Retinopathy (PDR): Abnormal new blood vessels grow, which are fragile and prone to bleeding, potentially causing severe vision loss.
Diabetic Macular Edema
At any stage, fluid can leak into the macula — the part of the retina responsible for sharp, central vision — causing it to swell. This condition, called diabetic macular edema, is a common cause of vision loss in diabetics.
Symptoms
Early diabetic retinopathy often has no symptoms. As it progresses, you may notice:
- Blurred or fluctuating vision
- Dark spots or floaters
- Patches of vision loss
- Poor night vision
- Colors appearing faded
Treatment Options
- Blood sugar, blood pressure, and cholesterol control: The foundation of preventing progression.
- Anti-VEGF injections: Medications injected into the eye to reduce swelling and block abnormal vessel growth.
- Laser photocoagulation: Seals leaking vessels or shrinks abnormal new vessels.
- Vitrectomy surgery: Removes blood and scar tissue from the eye in advanced cases.
Screening Recommendations
All diabetics should have a comprehensive dilated eye exam at least once a year, even without symptoms. Pregnant women with diabetes may need more frequent monitoring.
Frequently Asked Questions
Is diabetic retinopathy reversible?
Vision lost to advanced diabetic retinopathy is often permanent, which is why early detection and treatment are critical. However, treatment can halt or slow progression significantly.
Does type of diabetes matter?
Both type 1 and type 2 diabetics are at risk. Risk increases the longer you've had diabetes and with poorer blood sugar control.
Concerned about your eyes?
Book a comprehensive eye check-up with Dr. Sailli Gulavanii at Drishyam Netralaya.
Schedule Your Visit on WhatsAppDisclaimer: This article is for general educational purposes only and does not constitute medical advice. Always consult a qualified ophthalmologist for diagnosis and treatment tailored to your condition.