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  • Title: Nerve fibre layer analysis with GDx with a variable corneal compensator in patients with multiple sclerosis.
    Author: Della Mea G, Bacchetti S, Zeppieri M, Brusini P, Cutuli D, Gigli GL.
    Journal: Ophthalmologica; 2007; 221(3):186-9. PubMed ID: 17440281.
    Abstract:
    PURPOSE: To evaluate the ability of GDx with variable corneal compensator (VCC) compared to visual-evoked potentials (VEPs) and standard automated perimetry (SAP) in the detection of early optic nerve damage in patients with multiple sclerosis (MS). METHODS: 46 eyes of 23 MS patients were included. Ten of them had a history of acute retrobulbar optic neuritis. A control group of 20 normal subjects was also included. All subjects underwent a complete ophthalmological examination and testing with SAP, GDx VCC and VEPs. RESULTS: 19 eyes (41.3%) were abnormal with GDx VCC compared to 38 eyes (82.6%) with SAP and 31 (64.4%) with VEPs. In the optic neuritis group, 9 eyes (69.2%) had optic nerve pallor; SAP was abnormal in 8 of these eyes (61.5%) while VEPs and GDx VCC were abnormal in 6 eyes (46.1%). 2/20 eyes (10.0%) in the control group gave a false-positive abnormal result with SAP. GDx VCC and VEP were normal for all the eyes in the control group. CONCLUSIONS: GDx VCC is less able to detect early defects in MS patients compared to the currently used standard techniques of SAP and VEPs.
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