Clinical Publications

TEMPO

Comparison between New Perimetry Device (IMOvifa) and Humphrey® Field Analyzer (HFA™)

AUTHORS:

Eslani M; Nishida T; Moghimi S; Arias JM; Vasile C; Mohammadzadeh V; Weinreb RN

PUBLICATION:

Presented at the Association for Research in Vision and Ophthalmology meeting, 2022

Study Purpose

To evaluate the performance of IMOvifa, a new perimeter which performs visual field (VF) testing outside an examination darkroom, and compare with HFA

Overview

Study Design

Cross-sectional study

# of Eyes/
Patients

138 eyes of 69 patients, including healthy, glaucoma suspects, and primary open angle glaucoma

Study Device

IMO Smart Visual Function Analyzer (IMOvifa)*
Humphrey® Field Analyzer (HFA™)

Outcome Measures

Mean deviation (MD), pattern standard deviation (PSD), foveal threshold, visual field index (VFI), and visual field test time

Results

Test time was significantly faster for IMOvifa compared to HFA (256 seconds vs 419 seconds, P0.05) or VFI (92.6% vs 93.1%, p>0.05) between IMOvifa and HFA, while Bland Altman showed reasonable agreement
Differences were seen in mean PSD (4.1 dB vs 3.2 dB, p

IMOvifa reduced measurement time by

39%

FIGURE 1

FIGURE 1.

Bland-Altman diagram with median difference and agreement limits (including 95% of all difference values). Adapted from J Glaucoma. 2023 Feb 1; 32(2): 85-92. Epub 2022 Oct 7.

FIGURE 2

FIGURE 2.

Area under the receiver operator characteristic curves for mean deviation (A), pattern SD (B), and visual field index (C). Adapted from J Glaucoma. 2023 Feb 1;32(2):85-92. Epub 2022 Oct 7.

Conclusions

IMO Visual Function Analyzer demonstrated acceptable agreement to Humphrey Field Analyzer while significantly reducing test time.