Validation of the Iowa Head-Mounted Open-Source Perimeter.

ABSTRACT:

Purpose

To assess the validity of visual field (VF) results from the Iowa Head-Mounted Display (HMD) Open-Source Perimeter and to test the hypothesis that VF defects and test-retest repeatability are similar between the HMD and Octopus 900 perimeters.

Methods

We tested 20 healthy and nine glaucoma patients on the HMD and Octopus 900 perimeters using the Open Perimetry Interface platform with size V stimuli, a custom grid spanning the central 26° of the VF, and a ZEST thresholding algorithm. Historical data from the Humphrey Field Analyzer (HFA) were also analyzed. Repeatability was analyzed with the repeatability coefficient (RC), and VF defect detection was determined through side-by-side comparisons.

Results

The pointwise RCs were 2.6 dB and 3.4 dB for the HMD and O

SUBMITTER: Heinzman Z 

PROVIDER: S-EPMC10528495 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature