The Study
Diabetic retinopathy
This article is like a teacher summarizing what lots of other scientists have said about diabetes and eye problems. It doesn't do new experiments or count people to prove anything—it just puts together what people already think. So we can learn what's commonly believed, but we can't be sure it's true for everyone.
Analysis score
Maximum 5 for a narrative review.
Where the score came from
High blood sugar over time can damage the tiny blood vessels in your eyes, causing blurry vision or even blindness. This damage also affects nerves in the eye.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 51 / 100
Quality score
Based on clinical experience or non-systematic literature reviews. The lowest level of evidence as they are most susceptible to bias and personal perspective.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — without treatment, this damage can lead to permanent blindness, but early screening and treatment can prevent most vision loss.
- 2About 1 in 3 people with diabetes get eye damage.
- 3Controlling blood sugar and blood pressure helps stop it.
- 4Shots that block VEGF and laser treatments can save vision if damage is found early.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Nature Reviews Disease Primers
Year
2016
Authors
T. Wong, C. Cheung, M. Larsen, Sanjay Sharma, R. Simó
Related Content
Claims (7)
The blood vessels in the retina show changes that mirror changes in the heart and blood vessels throughout the body because both are exposed to the same metabolic and blood flow stresses.
Persistently high blood glucose levels damage the small blood vessels in the retina, leading to leakage, abnormal growth of blood vessels, and blockages.
Maintaining blood glucose and blood pressure within target ranges prevents diabetic retinopathy from developing and reduces its worsening over time.
Diabetic retinopathy occurs in about one-third of people with diabetes and is a major cause of vision loss in middle-aged and older adults, resulting from long-term high blood sugar, high blood pressure, and the length of time a person has had diabetes, through damage to small blood vessels and nerve cells in the retina.
Regular eye screening with retinal photography for people with diabetes reduces the risk of blindness by finding eye damage early so treatment can start sooner.
Anti-VEGF injections are used to treat vision loss caused by diabetic macular edema, and laser treatment is used to prevent severe vision loss in advanced diabetic eye disease.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.