The Computerized Glaucoma Visual Function Test: A Pilot Study Evaluating Computer-Screen Based Tests of Visual Function in Glaucoma.

Translational Vision Science & Technology
Christopher Jong, Simon E Skalicky

Abstract

We aimed to develop and evaluate the Computerized Glaucoma Visual Function Test (CoGVFT), among a cohort of glaucoma patients, and identify potential new items to optimize the test. A cross-sectional study involving 84 patients with open-angle glaucoma of varying severity and 18 controls without glaucoma were recruited. Better and worse eye visual field parameters, visual acuity, contrast sensitivity, 6-Part Cognitive Impairment Test (6CIT) and Glaucoma Activity Limitation-9 (GAL-9) questionnaire responses were recorded. The CoGVFT was administered to all participants. Rasch analysis was used to assess the psychometric properties of the CoGVFT, which was then evaluated with criterion, convergent, and divergent validity tests. Regression modeling determined factors predictive of CoGVFT performance. The 38-item CoGVFT demonstrated convergent validity with statistically significant differences in glaucoma severity groups (P < 0.001, analysis of variance). The correlation coefficient for CoGVFT person measures (logits) with GAL-9 person measures (logits) and better eye (BE) mean deviation was 0.528 (P < 0.001) and 0.762 (P < 0.001), respectively, demonstrating convergent validity. Divergent validity was suboptimal as the 6CIT score...Continue Reading

References

Apr 3, 2003·Journal of Glaucoma·Patricia NelsonColm O'Brien
Dec 20, 2007·Journal of Glaucoma·John L KeltnerUNKNOWN Ocular Hypertension Treatment Study Group
Aug 4, 2011·Investigative Ophthalmology & Visual Science·Jyoti KhadkaChristoph Hirneiss
Aug 30, 2011·American Journal of Ophthalmology·Simon E SkalickyPeter McCluskey
Jul 17, 2012·Health and Quality of Life Outcomes·Jyoti KhadkaKonrad Pesudovs
Oct 9, 2014·Clinical & Experimental Ophthalmology·Simon E SkalickyPeter McCluskey
Nov 12, 2016·Investigative Ophthalmology & Visual Science·Simon E SkalickyPeter McCluskey
May 5, 2017·Journal of Ophthalmology·Lee JonesDavid P Crabb
May 19, 2017·JAMA Ophthalmology·Alberto Diniz-FilhoFelipe A Medeiros
Oct 17, 2017·The Lancet Global Health·Seth R FlaxmanUNKNOWN Vision Loss Expert Group of the Global Burden of Disease Study

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Methods Mentioned

BETA
PCA

Software Mentioned

Statistical Package for Social Sciences ( SPSS
Winsteps
SPSS Statistics
6CIT
GAL
CoGVFT

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