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Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia
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Anterior chamber cell grading by optical coherence tomography.

Yan Li1, Careen Lowder, Xinbo Zhang

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Summary

Optical coherence tomography (OCT) accurately quantifies anterior chamber (AC) cells in uveitis patients. This imaging technique detects inflammatory cells missed by traditional methods, aiding diagnosis and management.

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Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Cellular Biology

Background:

  • Anterior uveitis is an inflammatory condition affecting the eye's anterior chamber (AC).
  • Accurate quantification of AC cells is crucial for diagnosing and monitoring uveitis.
  • Current methods like slit-lamp biomicroscopy have limitations in detecting subtle or peripherally located cells.

Purpose of the Study:

  • To evaluate optical coherence tomography (OCT) as a tool for quantifying cells in the ocular anterior chamber (AC).
  • To compare OCT-based cell counts with clinical grading of AC cells in uveitis patients.

Main Methods:

  • A time-domain anterior segment OCT system was utilized for in vitro and in vivo imaging.
  • OCT scans were divided into central, superior, and inferior regions.
  • A computer algorithm automatically identified particles in OCT images, and results were compared to slit-lamp biomicroscopy grading.

Main Results:

  • OCT successfully visualized latex microspheres and AC cells as reflective spots.
  • OCT cell counts showed high correlation with known particle concentrations (r=1.000) and clinical grades (Spearman's rho >0.63).
  • OCT detected inferior AC cells missed by slit-lamp examination in quiescent uveitis eyes.

Conclusions:

  • OCT provides quantitative data on AC inflammatory cells, correlating well with clinical assessment.
  • OCT's ability to detect cells missed by slit-lamp examination highlights its potential value.
  • OCT may serve as a valuable tool for the diagnosis and management of anterior uveitis.