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Visual Field Plots: A Comparison Study Between Standard Automated Perimetry and Eye Movement Perimetry.

Deepmala Mazumdar1,2, Johan J M Pel1, Najiya S Kadavath Meethal1,2

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Summary

New visual field plots using saccadic reaction time (SRT) effectively detect glaucoma defects. These eye movement perimetry (EMP) plots offer comparable clinical utility to standard automated perimetry for glaucoma diagnosis.

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Medical Imaging

Background:

  • Glaucoma diagnosis relies on visual field testing, but current methods can be improved.
  • Eye movement perimetry (EMP) measures saccadic reaction time (SRT) to assess visual field function.
  • Developing novel visual field probability plots based on SRT is crucial for enhancing glaucoma detection.

Purpose of the Study:

  • To develop SRT-based visual field probability plots.
  • To evaluate the clinical applicability of these novel plots in distinguishing normal from glaucomatous visual fields.
  • To compare the diagnostic performance of SRT-based plots with standard automated perimetry (SAP).

Main Methods:

  • Normative SRT data were established from 95 control subjects across different age groups.
  • A testing cohort included 28 healthy and 24 glaucoma patients who underwent both SAP and EMP.
  • Two glaucoma specialists evaluated 52 SAP and EMP plots for classification and defect pattern identification.

Main Results:

  • SRT-based plots demonstrated high sensitivity (100%) and specificity (93-96%) in identifying glaucomatous defects.
  • High agreement was observed between EMP and SAP classifications (85-92%) for glaucoma specialists.
  • Intermethod agreement between specialists was excellent (κ = 0.92-0.96).

Conclusions:

  • SRT-based visual field probability plots provide a comprehensive summary of visual field status.
  • These novel plots show comparable clinical applicability to SAP plots for glaucoma assessment.
  • The findings support the potential of SRT-based EMP for improved clinical decision-making in glaucoma management.