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Related Experiment Videos

Visual field screening and the development of a new screening program.

D B Henson1

  • 1Dept. of Optometry, University of Wales, Cardiff.

Journal of the American Optometric Association
|December 1, 1989
PubMed
Summary

Optimized visual field screening tests can efficiently diagnose chronic open-angle glaucoma. These tests achieve high sensitivity and specificity, making them suitable for routine optometric examinations.

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Area of Science:

  • Ophthalmology
  • Optometry
  • Medical Diagnostics

Background:

  • Diagnosing chronic open-angle glaucoma (COAG) necessitates thorough screening.
  • Current methods like intraocular pressure (IOP) measurement and disc evaluation yield high false positive/negative rates.
  • Comprehensive visual field analysis is time-consuming for routine use.

Purpose of the Study:

  • To evaluate the impact of modifying visual field screening test parameters.
  • To determine optimal parameters for an effective visual field screening test.
  • To assess the feasibility of integrating visual field screening into routine optometric practice.

Main Methods:

  • Investigated the effects of varying stimulus location, number, and suprathreshold increment.
  • Developed and optimized a visual field screening test based on parameter evaluation.
  • Compared the performance of the optimized screening test against theoretical predictions.

Main Results:

  • Identified specific parameter adjustments that enhance screening test performance.
  • Demonstrated that optimized visual field screening can achieve high sensitivity.
  • Showcased that optimized visual field screening can achieve high specificity.

Conclusions:

  • Visual field screening offers a viable alternative for COAG diagnosis.
  • Optimized screening tests are sufficiently brief for routine optometric examinations.
  • High sensitivity and specificity are attainable with appropriately designed visual field screening tests.

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