Statin users had less open-angle glaucoma and less treatment escalation

Design

Retrospective matched cohort, TriNetX electronic health record network

Population

210,701 matched adults over 40 (incidence); 29,598 with glaucoma (treatment)

Primary outcome

Open-angle glaucoma incidence and treatment escalation

Effect

5-year incidence HR 0.85 (95% CI 0.82–0.89); SLT HR 0.40, MIGS HR 0.45, incisional surgery HR 0.64

Using a large US electronic health record network, researchers compared matched adults over 40 with and without statin use. 210,701 matched patients were included in the incidence analysis and 29,598 people with existing glaucoma in the treatment analysis.

At five years, statin use was associated with about 15% lower risk of developing open-angle glaucoma. Among people who already had glaucoma, statin users were less likely to need selective laser trabeculoplasty, minimally invasive glaucoma surgery or incisional surgery, with hazard ratios between about 0.40 and 0.64. The associations persisted at ten years, slightly weaker.

This is observational database research. Statin users differ from non-users in health-care contact, adherence and many other ways, and database coding of glaucoma and procedures is imperfect. The large effects on treatment escalation in particular could reflect differences in how patients are followed rather than biology.

A plausible mechanism exists, through vascular and neuroprotective effects, but there is no trial. Statins should be prescribed for cardiovascular indications, and this is not a reason to start one for the eye.

• Do not start a statin to prevent or treat glaucoma; there is no trial evidence.
• Record statin use in the glaucoma history; it may be relevant to future research.
• Continue standard IOP-lowering treatment regardless of statin use.
• Support cardiovascular risk management in glaucoma patients for its own sake.

Why it matters

It strengthens a signal that systemic metabolic treatment may influence glaucoma, worth a proper trial.

Don't overread it

Observational database study; it cannot show that statins protect against glaucoma.

The statistics, in plain English

A hazard ratio of 0.85 means about 15% fewer new glaucoma diagnoses over time among statin users. Narrow confidence intervals reflect the very large sample, not freedom from bias; matching cannot remove differences that were not measured.

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