[Comparison of the Results of the Flicker Perimetry (Prototype versus Commercial Perimeter)].

Abstract

Background: Analysis of the comparison of flicker perimetry with the prototype Pulsar and the new Octopus 600. Methods: Both eyes of 20 patients with primary open-angle glaucoma were studied with 30° visual field flimmer perimetry (dynamic strategy) at the perimeters Pulsar and Octopus 600 (Haag-Streit). The evaluation was based on the mean defect (MD = mean deviation) and the defect depth (square root of lost variance = sLV). Results: In the t test for paired samples, the Pulsar perimetry showed significantly higher values than the Octopus 600 perimetry: right eye MD 4.8 ± 3.6 src vs. 1.7 ± 2.9 src, p = 0.005; left eye MD 3.9 ± 3.6 src v. 1.4 ± 2.8 src, p = 0.018; both eyes MD 4.35 ± 3.62 src vs. 1.55 ± 2.80 src, p = 0.002. The sLV values with the Pulsar perimetry were significantly higher than the values with the Octopus 600 perimetry: right eye sLV 3.6 ± 1.6 vs. 2.3 ± 1.3 src, p = 0.006; left eye sLV 3.2 ± 0.8 vs. 2.0 ± 0.8 src, p < 0.0001; both eyes sLV 3.37 ± 1.28 src vs. 2.12 ± 1.05 src, p < 0.0001. The significances even persisted after the Bonferroni-Holm correction. Conclusion: The investigation results of flicker perimetry are not comparable, because there is a significant difference in MD and sLV. This mainly due to different light intensities, background brightness and varying colour scalings of the perimetric device.

• Authors: N Zimmermann, A Hess, C Erb
• Journal: Klinische Monatsblatter fur Augenheilkunde (Klin Monbl Augenheilkd) Vol. 234 Issue 9 Pg. 1169-1173 (Sep 2017) ISSN: 1439-3999 [Electronic] Germany
• Vernacular Title: Vergleich der Ergebnisse der Flimmerperimetrie (Prototyp versus kommerziellem Perimeter).
• PMID: 27508889 (Publication Type: Comparative Study, Journal Article)
• Copyright: Georg Thieme Verlag KG Stuttgart · New York.

Topics

• Adolescent
• Adult
• Aged
• Child
• Equipment Design
• Female
• Glaucoma, Open-Angle (diagnosis)
• Humans
• Male
• Middle Aged
• Sensitivity and Specificity
• Visual Field Tests (instrumentation, methods)
• Visual Fields
• Young Adult