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Visual impairment was associated with higher delirium odds, but causality remains unproven

Journal of General Internal Medicine (PubMed)Sep 18, 2026

AI-summarized from the linked source. Educational brief, not medical advice.

Brief summary

A systematic review and meta-analysis found that visual impairment was associated with higher odds of delirium across adult care settings, but the low-certainty observational evidence does not show that visual impairment causes delirium.

What NurseJet pulled from the source

Across 44 studies involving 26,230 participants, the primary analysis of 16 studies with adjusted estimates found about twice the odds of delirium with visual impairment (OR 2.02; 95% CI 1.29 to 3.16). Substantial heterogeneity and variable definitions lowered certainty.

Why this matters for nurses

Nurses are positioned to identify sensory deficits during admission and delirium-risk assessment. The association supports documenting vision status as part of the clinical picture without treating glasses or other vision support as a proven delirium-prevention intervention on this evidence alone.

Bedside takeaway

Include baseline vision in delirium-risk assessment, while recognizing that the evidence shows association rather than causation.

Key takeaways

  • Visual impairment functioned as a prognostic marker across diverse adult populations and settings.
  • The adjusted analysis still showed substantial between-study heterogeneity, and the certainty of evidence was rated low.
  • The review did not test whether correcting visual impairment reduces delirium incidence.

Practice implications

  • Assess and document baseline vision and available aids during delirium-risk screening, make prescribed visual aids accessible when safe, and evaluate acute cognitive change through the facility's delirium pathway rather than attributing it to sensory impairment alone.

Limitations & cautions

  • The included evidence was observational, definitions of both visual impairment and delirium varied, heterogeneity was high, and residual confounding may remain. The analysis establishes association, not causation or treatment effectiveness.
  • AI-summarized from the linked source. Review the original article before applying to practice.

Citations

Exact source links

Public citations are filtered to exact credible source pages. Homepage-only or invalid links stay in admin review and are not shown here.

Journal of General Internal Medicine (PubMed)

Journal of General Internal Medicine (PubMed). The Association Between Visual Impairment and Delirium: A Systematic Review and Meta-Analysis.

Open original source

https://pubmed.ncbi.nlm.nih.gov/42760461/

Professional education only

This summary does not replace clinical judgment, facility policy, provider orders, or official guidelines. Verify practice changes against the original source and local protocol.

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