Objective:

To investigate the potential causal relationship between chronic kidney disease (CKD) and age-related macular degeneration (AMD), highlighting the innovative approach of linking systemic health to ocular outcomes.

Key Findings:

• Individuals with CKD have a significantly higher risk of developing AMD.
• Lower genetically determined eGFR is causally linked to over a twofold increase in the risk of advanced AMD.
• A shared genetic signal at the APOE locus suggests common biological pathways affecting both kidney and retinal health, indicating potential targets for intervention.

Interpretation:

The findings indicate that AMD may be a systemic disease influenced by renal dysfunction, rather than solely an ocular condition, with important clinical implications for patient management.

Limitations:

• The study may not account for all potential confounding factors, such as specific lifestyle or environmental influences.
• Further research is needed to fully understand the biological mechanisms linking CKD and AMD.

Conclusion:

Patients with CKD should be considered at higher risk for AMD, warranting targeted screening and interdisciplinary care, particularly in light of the asymptomatic nature of early disease.