LondonStatin users show 35% lower odds of retinal vein occlusion.
The eye condition causes vision loss and shares pathways with metabolic and atherothrombotic disease.
Ten cohort and case-control studies covering over 2 million adults found the link, with moderate certainty.
Metformin and GLP-1 drug signals come from single large cohorts, and SGLT-2 inhibitor results conflict.
The authors call for prospective studies, since observational data cannot prove statins cause the protection.
Sources: Nature