Quick read
Key points
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Diabetic retinopathy is damage to the blood vessels in the retina, the light-sensitive tissue at the back of the eye, caused by prolonged high blood sugar levels associated with diabetes. It often develops gradually and without symptoms in its early stages, which is why regular screening is so important for catching it early.
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Topic-specific prevention and risk reduction will be added during the article-specific evidence audit.
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You have diabetes and haven't had recent eye screening
01 · Know
What is Diabetic Retinopathy?
Diabetic retinopathy is damage to the blood vessels in the retina, the light-sensitive tissue at the back of the eye, caused by prolonged high blood sugar levels associated with diabetes. It often develops gradually and without symptoms in its early stages, which is why regular screening is so important for catching it early.
If retinopathy progresses, it can eventually affect vision, but a range of effective treatments exist, including laser treatment and injections, particularly when caught early through screening. Good blood sugar and blood pressure control also play a significant role in slowing its progression.
02 · Understand
Clinical context
Good blood sugar control is the most powerful preventive tool
Keeping blood sugar levels well managed over time is one of the most effective ways to prevent diabetic retinopathy from developing or progressing, alongside regular screening to catch any early changes.
03 · Act
When to Seek Care
- 1You have diabetes and haven't had recent eye screening
- 2You've been diagnosed with retinopathy and have questions about treatment
- 3You notice any changes in your vision — these should be reported promptly, not waited out
- 4You have diabetes and are planning a pregnancy, as additional screening is recommended
04 · Prevent & manage
Practical steps
Sudden Vision Changes Always Need Prompt Assessment
While gradual changes may be picked up through routine screening, any sudden vision loss, new floaters, or flashes of light need urgent assessment by an eye specialist.
- 1Attend regular diabetic eye screening.This catches changes early, when treatment is most effective.
- 2Keep blood sugar levels well controlled.This is the most effective way to slow or prevent the progression of retinopathy.
- 3Manage blood pressure and cholesterol.These also contribute to the health of blood vessels in the eyes.
- 4Attend all recommended treatment and follow-up appointments.Treatments like laser therapy or injections are most effective when started early.
- 5Report any sudden vision changes immediately.Don't wait for a scheduled appointment if you notice new or worsening symptoms.
Medical information notice
Health education, not individual medical advice
BarnMD Health Library provides general health education for public health literacy. Reading this article does not establish a doctor-patient relationship and this information is not a diagnosis, prescription, or personalised treatment plan. If you have symptoms or concerns about your health, seek appropriate advice from a qualified healthcare professional. If you develop emergency warning signs, seek urgent or emergency medical attention.
BarnMD Bottom Line
Diabetic retinopathy is manageable, especially when caught early through regular screening and supported by good blood sugar control.
Any sudden vision changes should always be assessed urgently, rather than waiting for a routine screening appointment.