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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

Summary

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.

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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.

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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.