Development of an LCD-Based Visual Field System.

Area of Science:

• Ophthalmology
• Medical Devices
• Diagnostic Imaging

Background:

• Assessing the diagnostic accuracy of novel visual field testing technologies is crucial for improving patient outcomes.
• The Humphrey Field Analyzer II-750i (HFA) is a widely used standard for visual field testing.
• Evaluating alternative systems like the LCD-based visual field testing system (LVF) is essential for advancing diagnostic capabilities.

Purpose of the Study:

• To compare the diagnostic effectiveness of an LCD-based visual field testing system (LVF) against the standard HFA.
• To evaluate the performance of LVF and HFA in differentiating normal and glaucomatous eyes using key perimetric indices.

Main Methods:

• A randomized controlled crossover study involving 202 normal and 128 glaucomatous eyes.
• Utilized both LVF and HFA systems for visual field testing in all participants.
• Compared results based on Mean Deviation (MD), Pattern Standard Deviation (PSD), and Area Under the ROC Curve (AUC).

Main Results:

• Significant correlations were observed between LVF and HFA for both MD (r=0.342 normal, r=0.796 glaucoma) and PSD (r=0.363 normal, r=0.828 glaucoma).
• High AUC values indicated strong discriminatory power for both systems: MD (LVF 0.786, HFA 0.868) and PSD (LVF 0.913, HFA 0.932).

Conclusions:

• The LVF system demonstrates comparable competence to the HFA for visual field testing.
• LVF shows promise as an effective tool for the early detection of glaucoma.