Preliminary Clinical Trials with the Humphrey Field Analyzer

Abstract

The Humphrey Field Analyzer is a new automated perimeter that performs static threshold testing and suprathreshold static testing. The static threshold test procedures use a target presentation pattern and staircase testing strategy that is similar to those employed on the Octopus and Squid automated perimeters. This paper describes our preliminary clinical evaluations of the central visual field threshold test procedure of the Humphrey Visual Field Analyzer. Manual kinetic testing on the Goldmann perimeter and Humphrey visual field tests were performed on 50 eyes with glaucoma or neuro-ophthalmology disorders. The Humphrey static threshold test times ranged from 8.3 to 19.2 minutes per eye, with an average time of 15 ± 2.6 minutes. We found fair to excellent correlation of the field results in 94% of the cases.

A variety of automated perimeters have been shown to be reliable in the detection and monitoring of visual field defects (1–5). As new perimeters are introduced clinically, validation studies are necessary to evaluate their usefulness when compared to established techniques. The Humphrey Field Analyzer is a new automated perimeter that performs static threshold and suprathreshold testing. In this study we conducted a preliminary comparison of results obtained with the central 30 degree static threshold test of the Humphrey Field Analyzer to manual kinetic perimetry using the Goldmann perimeter.