When the Kidney Meets the Retina

New study suggests potential causal link between kidney disease and AMD

January 22, 2026
3 min

The Ophthalmologist

Overview

A recent study reveals a causal link between chronic kidney disease (CKD) and age-related macular degeneration (AMD), suggesting that CKD may significantly increase the risk of developing advanced AMD. This finding emphasizes the importance of considering systemic health in ocular disease management.

Background

Age-related macular degeneration (AMD) is a leading cause of vision loss, traditionally associated with local ocular factors. Recent evidence indicates that systemic conditions, particularly chronic kidney disease (CKD), may contribute to AMD development. Understanding this relationship is crucial for improving screening and management strategies for at-risk populations.

Data Highlights

Study	Findings
UK Biobank	Over 430,000 participants; CKD linked to higher AMD risk.
Mendelian Randomization	Lower eGFR associated with >2-fold increased risk of advanced AMD.
Colocalization Analysis	Shared genetic signal at APOE locus suggests common pathways.

Key Findings

CKD significantly increases the risk of developing advanced AMD.
Lower genetically determined eGFR is causally linked to a more than twofold increase in AMD risk.
Colocalization analysis indicates a shared genetic signal at the APOE locus, linking kidney and retinal health.
Multiple sensitivity analyses support the robustness of the findings, minimizing confounding factors.
Interdisciplinary care is essential as CKD patients are at higher risk for AMD.

Clinical Implications

Ophthalmologists should consider screening for AMD in patients with chronic kidney disease due to their increased risk. Early detection and intervention may improve outcomes for these patients, highlighting the need for a multidisciplinary approach in managing systemic and ocular health.

Conclusion

The study underscores the importance of recognizing age-related macular degeneration as a systemic disease influenced by renal health, necessitating integrated care strategies.