A Five-Step Approach to Acute Vision Loss: A Practical Narrative Review for Clinicians

Acute vision loss is a time-critical presentation that requires rapid evaluation to differentiate benign conditions from ophthalmic and neurologic emergencies. Early recognition and appropriate triage are essential to prevent irreversible visual impairment. In many cases, the initial evaluation is performed by non-ophthalmic clinicians, where diagnostic uncertainty can delay appropriate referral and management.

To present a practical, stepwise framework for the assessment of acute vision loss that supports rapid clinical localization, early identification of red-flag features, and timely escalation of care.

A targeted review of recent literature was performed using PubMed and MEDLINE, focusing on major causes of acute vision loss, established clinical algorithms, and evidence-based emergency management strategies. Relevant guidelines and high-impact review articles published between 2015 and 2025 were included.

A structured five-step approach-(1) determination of laterality, (2) assessment for pain, (3) targeted history-taking, (4) focused chairside examination with identification of red flags, and (5) action through timely escalation, investigation, and referral, enables clinicians to rapidly triage pathology, prioritise urgency and identify vision-threatening conditions. Presentations such as central retinal artery occlusion, acute angle-closure glaucoma, retinal detachment, optic neuritis, and giant cell arteritis require immediate recognition and specialist involvement. Fundamental chairside assessment remains central to early decision-making and safe triage.

A five-step diagnostic framework provides a clear, clinically intuitive approach to acute vision loss that is applicable across emergency, primary care, and general ophthalmic settings. By prioritising early localization and risk stratification, this approach may reduce diagnostic delays and support safer triage of vision-threatening disease.