Short-duration transient visual evoked potentials and color reflectivity discretization analysis in glaucoma patients and suspects. 2017

Michael Waisbourd, and Rebekah H Gensure, and Ardalan Aminlari, and Sonya B Shah, and Nitasha Khanna, and Neil Sood, and Jeanne Molineaux, and Alberto Gonzalez, and Jonathan S Myers, and L Jay Katz
Wills EyeHospital Glaucoma Research Center, Philadelphia, PA 19107, USA.

OBJECTIVE To evaluate the use of short-duration transient visual evoked potentials (VEP) and color reflectivity discretization analysis (CORDA) in glaucomatous eyes, eyes suspected of having glaucoma, and healthy eyes. METHODS The study included 136 eyes from 136 subjects: 49 eyes with glaucoma, 45 glaucoma suspect eyes, and 42 healthy eyes. Subjects underwent Humphrey visual field (VF) testing, VEP testing, as well as peripapillary retinal nerve fiber layer optical coherence tomography imaging studies with post-acquisition CORDA applied. Statistical analysis was performed using means and ranges, ANOVA, post-hoc comparisons using Turkey's adjustment, Fisher's Exact test, area under the curve, and Spearman correlation coefficients. RESULTS Parameters from VEP and CORDA correlated significantly with VF mean deviation (MD) (P<0.05). In distinguishing glaucomatous eyes from controls, VEP demonstrated area under the curve (AUC) values of 0.64-0.75 for amplitude and 0.67-0.81 for latency. The CORDA HR1 parameter was highly discriminative for glaucomatous eyes vs controls (AUC=0.94). CONCLUSIONS Significant correlations are found between MD and parameters of short-duration transient VEP and CORDA, diagnostic modalities which warrant further consideration in identifying glaucoma characteristics.

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