Clinical Report: The Gut–Eye Cataract Connection

Overview

This study identifies significant alterations in the gut microbiome and fecal metabolome of patients with age-related cataract (ARC). Levels of key anti-inflammatory short-chain fatty acids (SCFAs) were significantly reduced in ARC patients.

Background

Age-related cataract is the leading cause of blindness globally, affecting approximately 95 million individuals. While aging is the primary risk factor, systemic factors such as metabolism, oxidative stress, and inflammation are recognized as contributors to lens degeneration.

Data Highlights

Key Findings

• Patients with ARC exhibited a more dysbiotic microbiome profile compared to healthy controls.
• Distinct fecal metabolomic signatures were identified in ARC patients, particularly involving glycerophospholipid and choline metabolism.
• Levels of anti-inflammatory SCFAs were significantly reduced in ARC patients.
• Microbial depletion correlated with impaired fermentation activity and reduced SCFA production.
• Altered lipid metabolism and reduced SCFA signaling may contribute to chronic inflammation and oxidative stress.

Clinical Implications

The findings suggest that gut microbiome alterations may play a role in cataract pathogenesis, highlighting the potential for microbiome-targeted interventions. Future research could explore the utility of stool-based biomarkers for non-invasive cataract risk assessment.

Conclusion

This study provides preliminary evidence supporting the gut-eye axis in age-related cataract, warranting further investigation into the relationship between gut health and ocular diseases.

Related Resources & Content

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10. Gut microbiota dysbiosis and altered fecal metabolome in patients with age-related cataract | Scientific Reports