Retinal Layer Reflectivity and Thickness as OCT Biomarkers for Diagnosis and Imaging-Based Stratification Relative to the 4.5-Hour Window in Acute Central Retinal Artery Occlusion - Scorecard - MDSpire

Retinal Layer Reflectivity and Thickness as OCT Biomarkers for Diagnosis and Imaging-Based Stratification Relative to the 4.5-Hour Window in Acute Central Retinal Artery Occlusion

  • By

  • Walter, Alessandra

  • Wenzel, Daniel A.

  • Poli, Sven

  • Druchkiv, Vasyl

  • Beuse, Ansgar

  • Schultheiss, Maximilian

  • Spitzer, Martin

  • Bartz-Schmidt, Karl Ulrich

  • Grohmann, Carsten

  • April 6, 2026

  • 0 min

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Clinical Scorecard: Assessment of Retinal Layer Reflectivity and Thickness via OCT as Diagnostic Biomarkers for Imaging-Based Stratification in Acute Central Retinal Artery Occlusion Within the 4.5-Hour Reperfusion Window

At a Glance

CategoryDetail
ConditionAcute Central Retinal Artery Occlusion (CRAO)
Key MechanismsOCT-derived retinal layer reflectivity and thickness alterations
Target PopulationPatients with unilateral acute non-arteritic CRAO
Care SettingMulticentric clinical investigation

Key Highlights

  • IRL/ORL reflectivity ratio differentiates CRAO-affected eyes from fellow eyes (AUC = 0.98-0.99)
  • Retinal thickness increases in CRAO eyes across ETDRS sectors, with varying diagnostic performance (AUC 0.78-0.99)
  • Temporal dependence observed in reflectivity and thickness metrics, aiding in stratification relative to the 4.5-hour reperfusion window
  • Optimal RRTI cut-off for inferior sectors is approximately 1.20
  • Metrics may enhance acute stroke triage and telemedicine workflows

Guideline-Based Recommendations

Diagnosis

  • Utilize OCT to assess IRL/ORL reflectivity ratio and retinal thickness for CRAO diagnosis
  • Evaluate temporal changes in reflectivity and thickness for ischemic tissue status

Management

  • Consider the 4.5-hour window for reperfusion interventions based on OCT findings

Monitoring & Follow-up

  • Monitor changes in retinal thickness and reflectivity over time to assess ischemia progression

Risks

  • Potential for misdiagnosis if OCT metrics are not utilized within the critical time frame

Patient & Prescribing Data

39 patients with unilateral acute non-arteritic CRAO

OCT-derived metrics provide objective insights for timely intervention

Clinical Best Practices

  • Implement OCT imaging within 48 hours of symptom onset for accurate assessment
  • Use quantitative OCT biomarkers for enhanced diagnostic accuracy in acute CRAO

References

Original Source(s)

Retinal Layer Reflectivity and Thickness as OCT Biomarkers for Diagnosis and Imaging-Based Stratification Relative to the 4.5-Hour Window in Acute Central Retinal Artery Occlusion

  • by Walter, Alessandra , Wenzel, Daniel A., Poli, Sven , Druchkiv, Vasyl , Beuse, Ansgar , Schultheiss, Maximilian , Spitzer, Martin , Bartz-Schmidt, Karl Ulrich, Grohmann, Carsten

  • April 6, 2026

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