A Method for Reducing the Number of Presentations in Perimetric Test Procedures

Area of Science:

• Ophthalmology
• Psychophysics
• Medical Technology

Background:

• Psychophysical procedures are crucial for assessing visual function but can be time-consuming.
• Reducing test duration is essential for improving patient experience and clinical efficiency, particularly in perimetry.

Purpose of the Study:

• To introduce ARBON (Accelerated Response-Based Observation), a novel method designed to decrease the testing time of psychophysical procedures.
• To evaluate the efficacy and application of ARBON in perimetry, a key visual field test.

Main Methods:

• ARBON was simulated to run in parallel with existing psychophysical procedures, introducing occasional artificial responses.
• Computer simulations mimicking human responses in perimetry were used, involving 610 normal and 163 glaucoma eyes.
• Performance was assessed by comparing ARBON to an underlying procedure and a faster, truncated version, measuring presentation numbers and threshold estimation error.

Main Results:

• ARBON reduced the number of presentations by 16%, comparable to a 18% reduction by a truncated procedure.
• The truncated procedure increased mean error by 8-10%, whereas ARBON decreased it by 5-7%.
• ARBON achieved over 80% overlap in threshold distributions with the underlying procedure, significantly higher than the 50% overlap from the truncated procedure.

Conclusions:

• ARBON provides a principled approach to reducing psychophysical test times.
• It can be integrated into existing procedures without altering their core logic or parameters.
• ARBON preserves the integrity of measured threshold distributions, yielding results comparable to traditional methods.