Temporal resolution deficits in the visual fields of MS patients.
We assessed the relationship between temporal resolution and MS-induced neuropathy. A diagnostic strategy comprising assessments of temporal resolution at 16 points in the extra-foveal visual field up to 12 degrees from the fovea was first compared with foveal temporal resolution and with a standard VEP procedure in the same MS patients. At the group level, foveal temporal resolution was less sensitive to demyelination than the 16-point diagnostic strategy, the detection rate of which was comparable to that of the VEP procedure. Cross-sensitivity of the VEP and the 16-point diagnostic procedure was low. Subsequently, the average severity of MS-induced temporal resolution deficits was studied at three retinal loci of the same size but different eccentricities. Foveal deficits were not significantly greater than more peripheral deficits within the central 12 degrees.
Vleugels
L
L
National Multiple Sclerosis Centre, Melsbroek, Belgium. lucv@mail.dma.be
Charlier
M
M
van Nunen
A
A
Lafosse
C
C
Vogels
R
R
Ketelaer
P
P
Vandenbussche
E
E
D000328:Adult; D000368:Aged; D005074:Evoked Potentials, Visual; D005260:Female; D005584:Fovea Centralis / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000150:complications*; D010775:Photic Stimulation; D012160:Retina / Q000503:physiopathology; D014786:Vision Disorders / Q000150:complications*; D014794:Visual Fields