CLEAR report 1: a scoping review and meta-analysis for definitions, imaging metrics, and functional correlates of photoreceptor integrity in AMD - Scorecard - MDSpire

CLEAR report 1: a scoping review and meta-analysis for definitions, imaging metrics, and functional correlates of photoreceptor integrity in AMD

  • By

  • Kimberly L. Spooner

  • Anjali Gaston

  • Anushka Irodi

  • Alicia Lim

  • Omer Trivizki

  • Livia Faes

  • Sobha Sivaprasad

  • Dun Jack Fu

  • July 6, 2026

  • 0 min

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Clinical Scorecard: CLEAR Report 1: A Comprehensive Review and Meta-Analysis of Definitions, Imaging Metrics, and Functional Associations of Photoreceptor Integrity in Age-Related Macular Degeneration

At a Glance

CategoryDetail
ConditionAge-Related Macular Degeneration (AMD)
Key MechanismsPhotoreceptor degeneration, particularly involving the ellipsoid zone (EZ) and outer nuclear layer (ONL), is linked to functional impairment.
Target PopulationOlder adults with advanced age-related macular degeneration.
Care SettingClinical trials and regulatory evaluations involving OCT-derived photoreceptor biomarkers.

Key Highlights

  • OCT enables non-invasive quantification of photoreceptor integrity.
  • High reliability for EZ and ONL metrics when definitions and methods are consistent.
  • Moderate-to-strong correlations exist between photoreceptor loss and visual function.
  • Substantial heterogeneity in definitions and reporting complicates cross-study comparisons.
  • Consensus on boundary definitions and reporting standards is necessary for reproducibility.

Guideline-Based Recommendations

Diagnosis

  • Utilize OCT-derived photoreceptor biomarkers for assessing AMD.

Management

  • Adopt standardized definitions and reporting practices for photoreceptor metrics.

Monitoring & Follow-up

  • Implement structure-function analyses to track disease progression.

Risks

  • Inconsistent definitions may lead to misinterpretation of disease activity and treatment efficacy.

Patient & Prescribing Data

Patients with advanced AMD, including geographic atrophy and neovascular AMD.

Early intervention may be facilitated by identifying photoreceptor loss before complete atrophy.

Clinical Best Practices

  • Ensure clear definitions and consistent application of measurement protocols in clinical studies.
  • Utilize automated and deep learning methods for reproducible quantification in multicenter trials.
  • Incorporate structure-function correlations in clinical assessments of AMD.

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