Diabetic Retinopathy
Diabetic retinopathy is a diabetes-related condition that affects the retina, where prolonged high blood sugar damages delicate blood vessels. With early detection, regular monitoring, and modern treatment, progression can often be slowed or stabilised to help prevent vision loss.What Is Diabetic Retinopathy?
Diabetic Retinopathy develops when diabetes causes changes in the retinal blood vessels.
In the early stages, vessels may:
- Become blocked, reducing blood supply to the retina
- Leak fluid or blood into the retinal tissue
Both processes can damage the peripheral retina and the central retina (macula), which is responsible for detailed vision.
Diabetes affects a significant proportion of the population, and all individuals with diabetes are at risk of developing diabetic eye disease. The likelihood increases with:
- Longer duration of diabetes
- Poor blood glucose control
- High blood pressure
- Elevated cholesterol
Diabetic Retinopathy is one of the leading causes of vision impairment in working-age adults. Importantly, early stages may not cause noticeable symptoms – making regular screening essential.
Next Steps
If you have diabetes – even in the absence of symptoms – regular retinal examinations are critical.
Early detection allows intervention before significant vision loss occurs. Prevention remains the cornerstone of care, with strict blood sugar control playing a central role in reducing risk.
Bringing information about your recent blood glucose levels – including HbA1c – to your appointment is extremely helpful in guiding management.
Symptoms
In its early stages, Diabetic Retinopathy may cause little or no visual disturbance.
As the condition progresses, symptoms may include:
- Mild blurring of near or distance vision
- Fluctuating vision
- Floaters
- Distortion
- Dark patches in the visual field
- Sudden loss of vision (in advanced cases)
Any sudden visual change should be assessed promptly.
Assessment & Diagnosis
Assessment includes:
- Dilated retinal examination
- Optical Coherence Tomography (OCT) imaging
- Retinal photography
- Evaluation of the macula
- Assessment for retinal bleeding, swelling or abnormal vessel growth
These investigations allow early identification of retinal changes and accurate staging of disease severity.
Ongoing monitoring is essential, as progression can occur even when vision appears stable.
Treatments
While existing damage cannot be reversed, modern treatments are highly effective in stabilising the condition and preventing further vision loss.
Management focuses on both systemic health and targeted retinal therapies to slow progression and protect vision. Early and consistent care is essential for the best outcomes.
- Optimising blood glucose, blood pressure, and cholesterol
- Intravitreal injections to reduce swelling and abnormal vessel growth
- Laser treatment or vitrectomy surgery in more advanced cases
Recovery & Aftercare
Recovery varies depending on the treatment performed.
For injections and laser treatments:
- Procedures are typically performed in a clinical setting
- Vision may be temporarily blurred
- Regular follow-up is required
For surgical intervention:
- Recovery may take longer
- Post-operative monitoring is essential
Diabetic Retinopathy requires structured, long-term care. With consistent monitoring, good systemic control and timely treatment, many patients maintain functional vision for years.