Pulfrich pendulum phenomenon in patients with a history of acute optic neuritis.

@article{Slagsvold1978PulfrichPP,
  title={Pulfrich pendulum phenomenon in patients with a history of acute optic neuritis.},
  author={J E Slagsvold},
  journal={Acta ophthalmologica},
  year={1978},
  volume={56 5},
  pages={817-26}
}
The Pulfrich phenomenon is a stereoillusion in which a pendulum swinging at right angles to the line of gaze appears to be describing an elliptical path when absorbing filters are placed in front of one eye. We used two sets of polaroid glasses as adjustable filters. A spot on a modified oscilloscope served at a pendulum bob. Twenty-nine former patients with a history of optic neuritis and visual acuities of greater than or equal to 6/6 in both eyes and twenty-two normal subjects underwent… CONTINUE READING