Diabetic Retinopathy
Specialized Eye Care for Patients with Diabetes
Comprehensive diabetic eye screening, laser treatment, and anti-VEGF injections at our NABH certified eye hospital.
What is Diabetic Retinopathy?
Diabetic retinopathy is a complication of diabetes that affects the eyes. In Hindi, it is often described as sugar se ankh ki bimari (शुगर से आंख की बीमारी) - eye disease caused by diabetes. It occurs when high blood sugar levels damage the tiny blood vessels in the retina, the light-sensitive tissue at the back of your eye.
Over time, these damaged blood vessels can swell and leak fluid, or they can close off completely, preventing blood from flowing through. In some cases, abnormal new blood vessels grow on the retina. All of these changes can lead to vision loss if left untreated.
Diabetic retinopathy can affect anyone who has Type 1 or Type 2 diabetes. The longer you have diabetes and the less controlled your blood sugar is, the higher your risk. It is one of the leading causes of blindness among working-age adults, but with regular screening and timely treatment, vision loss is largely preventable.
Every diabetic patient needs annual eye exams
Diabetic retinopathy often has no symptoms in its early stages. You may feel fine and see clearly, but damage could already be occurring inside your eyes. This is why annual dilated eye exams are essential for every person with diabetes, regardless of whether they have vision complaints.
Stages of Diabetic Retinopathy
Diabetic retinopathy progresses through stages, from mild to severe. Understanding these stages helps in planning appropriate treatment.
Mild NPDR
The earliest stage. Small areas of balloon-like swelling (microaneurysms) occur in the retina's blood vessels. These may leak small amounts of fluid. Vision is usually not affected at this stage, but monitoring is important.
Moderate NPDR
As the disease progresses, some blood vessels that nourish the retina become blocked. The retina may show more bleeding and leakage. Swelling of the macula (diabetic macular oedema) may begin, which can affect central vision.
Severe NPDR
Many more blood vessels become blocked, depriving large areas of the retina of blood supply. These areas send signals to the body to grow new blood vessels. Without treatment, this stage progresses to proliferative retinopathy.
PDR
The most advanced and dangerous stage. Abnormal new blood vessels grow along the retina and into the vitreous gel. These fragile vessels can leak blood, causing severe vision loss. They can also cause retinal detachment and glaucoma. Urgent treatment is needed.
Symptoms of Diabetic Retinopathy
In the early stages, diabetic retinopathy often has no symptoms at all. As the condition progresses, you may experience:
- Blurred or fluctuating vision that changes from day to day
- Dark spots or floaters (strings floating in your vision)
- Dark or empty areas in the centre or sides of your vision
- Difficulty reading or seeing faces clearly
- Colours appearing washed out or faded
- Sudden and severe vision loss (in advanced cases with bleeding)
No symptoms does not mean no disease
Many patients with significant diabetic retinopathy have no symptoms at all. Do not wait for symptoms to appear before getting your eyes checked. By the time you notice vision changes, considerable damage may already have occurred.
Why Regular Screening Matters
Diabetic retinopathy is one of the most preventable causes of blindness. The key to prevention is regular screening, because treatment is most effective when the disease is caught early, before vision is affected.
At Indumati Netralaya, we recommend that all diabetic patients get a comprehensive dilated eye examination at least once a year. During this exam, we use specialised equipment to examine the retina in detail and detect even the earliest signs of diabetic damage.
Studies show that timely treatment of diabetic retinopathy can reduce the risk of severe vision loss by more than 90%. But this is only possible if the condition is detected early through regular screening.
- Type 2 diabetes: Get your first eye exam at the time of diagnosis, then annually
- Type 1 diabetes: Get your first exam within 5 years of diagnosis, then annually
- Pregnancy with diabetes: Get an exam in the first trimester and monitor throughout
- If retinopathy is found: More frequent exams every 3-6 months as advised by your doctor
Treatment Options
Treatment depends on the stage and severity of diabetic retinopathy. Early stages may only require monitoring and better blood sugar control, while advanced stages need active intervention.
Laser Photocoagulation
Targeted laser burns seal leaking blood vessels and reduce swelling in the retina. Panretinal photocoagulation (PRP) treats widespread retinal damage by shrinking abnormal blood vessels. Performed as an outpatient procedure, usually over multiple sessions.
Anti-VEGF Injections
Medications injected directly into the eye to block the growth of abnormal blood vessels and reduce fluid leakage. Highly effective for diabetic macular oedema and proliferative retinopathy. Given as a series of injections over several months.
Vitrectomy
A surgical procedure for advanced cases with significant bleeding into the vitreous (vitreous haemorrhage) or retinal detachment. The blood-filled vitreous gel is removed and replaced with a clear solution, restoring the light path to the retina.
Prevention Tips for Diabetic Patients
While diabetic retinopathy cannot always be prevented entirely, these steps can significantly reduce your risk and slow its progression.
Control Blood Sugar
Keep your HbA1c below 7%. Good glycaemic control is the single most important factor in preventing diabetic eye disease.
Annual Eye Exams
Get a dilated eye exam every year, even if your vision seems fine. Early detection allows for early treatment.
Manage Blood Pressure
High blood pressure worsens diabetic retinopathy. Keep your BP within the target range recommended by your doctor.
Healthy Lifestyle
Exercise regularly, maintain a healthy diet, avoid smoking, and manage cholesterol levels to protect your eyes and overall health.
Frequently Asked Questions
Common questions about diabetes and eye health
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