Association Between Prediabetes and Retinopathy: A Meta-Analysis.

Area of Science:

• Ophthalmology
• Endocrinology
• Public Health

Background:

• Diabetes mellitus significantly increases the risk of microvascular complications, notably retinopathy.
• The association between prediabetes and retinopathy remains incompletely understood.
• Early identification of retinopathy risk factors is crucial for preventative strategies.

Purpose of the Study:

• To conduct a meta-analysis evaluating the relationship between prediabetes and the prevalence of retinopathy.
• To synthesize evidence from observational studies to quantify the risk of retinopathy in individuals with prediabetes compared to those with normoglycemia.

Main Methods:

• A systematic meta-analysis was performed using data from Medline, Embase, and Web of Science databases.
• Nine cross-sectional studies involving 14,751 adult participants were included.
• A random-effect model was employed to pool results, with subgroup analyses to assess influential factors.

Main Results:

• Prediabetes was significantly associated with a higher prevalence of retinopathy compared to normoglycemia (OR: 1.55, 95% CI: 1.10-2.20, p=0.01).
• Sensitivity analyses confirmed the robustness of the findings.
• Subgroup analyses indicated that study characteristics did not significantly alter the observed association.

Conclusions:

• Current evidence suggests a notable association between prediabetes and an increased prevalence of retinopathy.
• These findings highlight the importance of early retinopathy prevention strategies for individuals with prediabetes.
• Further prospective cohort studies are recommended to validate these results.