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Related Experiment Videos

Multicenter evaluation of tendency-oriented perimetry (TOP) using the G1 grid.

M Gonzáles de la Rosa1, J Morales, F Dannheim

  • 1University of La Laguna, Spain. mgdelarosa@jet.es

European Journal of Ophthalmology
|March 15, 2003
PubMed
Summary
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The G1-TOP program offers visual field testing results comparable to the Standard Bracketing strategy. This new method significantly reduces testing time by 80%, making perimetric assessments more efficient.

Area of Science:

  • Ophthalmology
  • Visual field testing
  • Glaucoma diagnostics

Background:

  • Automated perimetric strategies are crucial for diagnosing and monitoring visual field defects.
  • The G1 grid is a standard for visual field testing.
  • Efficiency in perimetry is essential for patient comfort and throughput.

Purpose of the Study:

  • To compare the efficacy and efficiency of the G1-TOP program against the Standard Bracketing strategy.
  • To evaluate the G1-TOP program's ability to yield similar results to a well-established method.
  • To determine the time savings associated with the G1-TOP program.

Main Methods:

  • A comparative study involving 213 patients (406 eyes) across eleven institutions.
  • Participants included glaucoma patients, glaucoma suspects, and individuals with neurological disorders or chorioretinal lesions.

Related Experiment Videos

  • Visual field testing was performed using the Octopus 1-2-3 perimeter, comparing G1-TOP and G1-Standard Bracketing in interchangeable order.

    • Main Results:

    • The G1-TOP program demonstrated a high correlation (0.95) with Standard Bracketing for Mean Defect (MD).
    • Mean sensitivity values were statistically similar between the two strategies (p>0.05).
    • G1-TOP testing duration was significantly shorter (2.19 min) compared to G1-Standard Bracketing (11.51 min), representing an 80.4% reduction.

    Conclusions:

    • The G1-TOP program provides comparable results to G1-Standard Bracketing.
    • G1-TOP achieves these results in approximately 20% of the time required by the standard strategy.
    • This suggests G1-TOP is a highly efficient alternative for visual field testing.