An automatic perimeter for glaucoma visual field screening and control. Construction and clinical cases

Area of Science:

• Ophthalmology
• Medical instrumentation
• Visual science

Background:

• Static perimetry is crucial for diagnosing visual field defects.
• Conventional perimetry methods can be time-consuming and subjective.
• Automated systems offer potential for improved efficiency and objectivity.

Purpose of the Study:

• To describe a novel apparatus for automated static perimetry.
• To evaluate the performance of this new instrument in analyzing central visual field defects.

Main Methods:

• Development of a fully automatic static perimetry apparatus.
• Programming test logic into a mini-computer for controlled stimulus presentation.
• Plotting results in polar coordinates for clear visualization.
• Analysis of visual field defects using both conventional and automated methods.

Main Results:

• The apparatus successfully performs static perimetry at 64 points in the central visual field.
• Automated testing logic ensures consistent and programmed test execution.
• Results from the automated instrument show satisfying agreement with conventional analysis for small to medium visual field defects.

Conclusions:

• The described automated static perimetry apparatus is a viable tool for visual field analysis.
• This instrument provides accurate and efficient assessment of central visual field defects.
• The automated system demonstrates potential for clinical application in ophthalmology.