Pulfrich effect is seen in -: (A) Multiple sclerosis, (B) Gullian Barre syndrome, (C) Parkinson's disease, (D) Alzheimer's disease
Answer is A. Answer- A. Multiple sclerosisThe Pulfrich effect is a sign of optic neuritis seen in patients with Multiple sclerosis.The Pulfrich effect is a psychophysical percept wherein a two dimensional lateral motion of an object in the fietd of view is interpretd by the visual coex as having a depth component (three dimensional), due to a relative difference in signal timings between the two eyes.