Diabetic retinopathy is damage to the retina’s small blood vessels caused by diabetes. It can threaten sight, yet early disease often has no obvious warning signs. That is why people with diabetes need regular, comprehensive dilated eye examinations even when vision seems normal. Dr. Sonam Angmo Garg, a medical retina specialist, can assess retinal changes and discuss monitoring or treatment based on the findings.
Why symptoms may appear late
In early stages, retinal changes may not affect central vision. As the condition progresses, fragile vessels can leak or bleed, and abnormal new vessels may grow. Swelling in the macula, the central part of the retina, is called diabetic macular edema and can blur detailed vision. Because the other eye may compensate, a person might not notice a problem until disease is more advanced. A symptom-free interval is not proof that the retina is healthy.
Warning signs that deserve attention
Possible symptoms include blurred or fluctuating vision, dark spots or floaters, faded colours, trouble reading, or dark or empty areas in the field of view. A sudden shower of floaters, flashes, a curtain-like shadow, or sudden loss of vision requires urgent eye assessment. New distortion, worsening blur or difficulty with everyday tasks should also prompt an appointment soon. Do not wait for the next annual review if a new symptom develops.
Screening and assessment
A dilated retinal examination lets the specialist inspect the back of the eye. Depending on the findings, retinal photographs, optical coherence tomography (OCT) or other imaging may be used to look for leakage, swelling or abnormal vessels. The recommended interval depends on diabetes type, pregnancy, existing retinal changes and overall health. Your clinician will set a schedule for you; it may be more frequent than yearly when retinopathy is present.
Protecting vision over time
Good diabetes care supports eye health. Work with your diabetes care team to manage blood glucose, blood pressure and cholesterol, and take medicines as prescribed. These steps do not replace retinal examinations, but can help reduce risk of progression. If treatment is needed, options may include intravitreal medicines, laser, or a combination, depending on whether the main problem is macular swelling, abnormal vessel growth or another complication. Treatment plans are individual, and ongoing monitoring matters because diabetic eye disease can change.
Keep a record of eye appointments and ask whether your next visit should include dilation or imaging. Tell your eye specialist about pregnancy, changes to diabetes treatment and any new visual symptoms. If transport is needed after dilation, plan ahead because vision may be temporarily blurred or light-sensitive.
Frequently asked questions
Can diabetic retinopathy occur without symptoms? Yes. Early disease may not change vision, so routine dilated exams are essential.
How often should I have a retinal exam? Your clinician will recommend the interval based on diabetes and retinal findings. Keep the schedule even if you see well.
Does controlling blood sugar cure retinopathy? Good control helps reduce risk and progression, but it does not replace specialist assessment or treatment when disease is present.
Explore the clinic’s Diabetic Retinopathy care and Retinal Lasers.