Clinical Publications

TEMPO

Comparison of Perimetric Outcomes from a Tablet Perimeter, Smart Visual Function Analyzer, and Humphrey® Field Analyzer (HFA™)

AUTHORS:

Kang J, De Arrigunaga S, Freeman SE, Zhao Y, Lin M, Liebman DL, Roldan AM, Kim JA, Chang DS, Friedman DS, Elze T.

PUBLICATION:

Ophthalmol Glaucoma. 2023 Mar 12:S2589-4196(23)00059-5. Ophthalmol Glaucoma. 2023 Sep-Oct;6(5):509-520. doi: 10.1016/j.ogla.2023.03.001. Epub 2023 Mar 12

Study Purpose

To compare tablet and Smart Visual Function Analyzer results with outputs from the Humphrey Field Analyzer 24-2 Swedish Interactive Threshold Algorithm Standard program

Overview

Study Design

Observational, cross-sectional study

# of Eyes/
Patients

133 eyes of 79 patients, including glaucoma suspects, ocular hypertension, and glaucoma patients

Study Device

IMO Smart Visual Function Analyzer (referred to as IMOvifa SVFA)*
Humphrey® Field Analyzer (HFA™)
Melbourne Rapid Fields (MRF)

Outcome Measures

Primary: Mean deviation (MD), pattern standard deviation (PSD), reliability parameters, and point sensitivity

Results

The mean difference in MD between HFA 24-2 SITA-Standard and IMOvifa 24-2 AIZE was 0.24 dB, 95% confidence interval (-0.16 dB, 0.63 dB), P=0.237. The mean difference in MD between HFA and MRF was 0.03 dB, 95% CI (-0.36 dB, 0.42 dB), P=0.89 (Figure 1)
There was no significant difference in PSD between HFA and IMOvifa,
Point-by-point sensitivities on IMOvifa and MRF tablet differed from those of

IMOvifa reduced measurement time by

39%

FIGURE 1.

FIGURE 1

Boxplot comparing the mean deviation (MD) and PSD for the HFA, SVFA, and tablet, with pairwise significance shown. Adapted from Ophthalmol Glaucoma. 2023 Mar 12:S2589- 4196(23)00059-5. Epub ahead of print.

Conclusions

IMO Smart Visual Function Analyzer provided comparable mean deviation and pattern standard deviation values to those of Humphrey Field Analyzer for glaucoma patients. Relative to HFA, IMOvifa underestimated light sensitivity but its results were more similar to HFA results than MRF.