Clinical evaluation of the Scoperimeter, an experimental automatic perimeter

Area of Science:

• Ophthalmology
• Medical Devices
• Visual Field Testing

Background:

• Automated perimetry is crucial for diagnosing visual field defects.
• The Scoperimeter is an experimental device using a novel suprathreshold strategy.
• Evaluating its efficacy in detecting various visual field abnormalities is necessary.

Purpose of the Study:

• To assess the Scoperimeter's performance in detecting glaucomatous and maculopathy-related visual field defects.
• To compare its diagnostic capabilities against manual perimetry for early glaucoma detection.

Main Methods:

• The Scoperimeter, an automated campimeter, was tested using a gradient-adapted suprathreshold strategy.
• Comparative analysis was conducted on normal visual fields, glaucomatous defects, and maculopathy-related defects.
• Results were compared with high-resolution manual static perimetry.

Main Results:

• The Scoperimeter identified all large visual field defects.
• It detected 60% of very early glaucomatous defects, with manual perimetry identifying the remaining 40%.
• Accurate defect configuration was limited to large, homogeneous defects.

Conclusions:

• The Scoperimeter shows promise for detecting glaucomatous defects, especially with improved resolution and peripheral field examination.
• Its current low resolution and strategy are inadequate for small, central visual field defects.
• Further development is needed for comprehensive visual field assessment.