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Related Experiment Video

Updated: May 2, 2026

Development of a Noninvasive, Laser-Assisted Experimental Model of Corneal Endothelial Cell Loss
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[Grading for corneal endothelial damage].

Shigeru Kinoshita, Shiro Amano, Yoshitsugu Inoue

    Nippon Ganka Gakkai Zasshi
    |March 20, 2014
    PubMed
    Summary

    A new grading system for corneal endothelial damage has been proposed by the Japanese Corneal Society. This system categorizes damage based on corneal endothelial cell (CEC) density, aiding in the assessment of conditions like bullous keratopathy.

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    Area of Science:

    • Ophthalmology
    • Cell Biology

    Context:

    • Corneal endothelial damage, a precursor to bullous keratopathy, currently lacks a standardized severity grading system.
    • The Japanese Corneal Society recognized the need for objective criteria to assess endothelial dysfunction.

    Purpose:

    • To establish a novel, multi-grade severity classification for corneal endothelial damage.
    • To correlate corneal endothelial cell (CEC) density with clinical presentation and risk of bullous keratopathy.

    Summary:

    • The proposed grading system defines five levels (Normal, Grade 1-4) based on CEC density (cells/mm²).
    • Normal: ≥2000 CECs/mm².
    • Grade 1: 1000-2000 CECs/mm².
    • Grade 2: 500-1000 CECs/mm² (transparency endangered, risk of bullous keratopathy).
    • Grade 3: <500 CECs/mm² (no edema).
    • Grade 4: Bullous keratopathy (corneal opacity with edema).

    Impact:

    • This grading system provides a framework for consistent evaluation of corneal endothelial health.
    • It facilitates timely intervention and management decisions for patients with potential vision-threatening corneal conditions.
    • Standardized grading can improve research consistency and clinical trial outcomes for corneal diseases.