Abstract

Data are presented on the magnitude and frequency of the involuntary eye motions (rapid motions superimposed on slow drifts) that take place during attempted fixation on a target. A record of these motions was obtained by directly photographing a blood vessel of the eye. Vertical and horizontal motions were recorded for both monocular and binocular fixation. The rapid motions were found to have an average frequency of 50 cps and an average amplitude of 1.2 minutes of arc. These data are in approximate agreement with previous data of Adler and Fliegelman and of Ratliff and Riggs. Simultaneous tracks of head and eye motions show that the rapid eye motions are independent of head motions.

© 1953 Optical Society of America

The Disappearance of Steadily Fixated Visual Test Objects*

Lorrin A. Riggs, Floyd Ratliff, Janet C. Cornsweet, and Tom N. Cornsweet
J. Opt. Soc. Am. 43(6) 495-501 (1953)

Motions of the Retinal Image during Fixation*

Lorrin A. Riggs, John C. Armington, and Floyd Ratliff
J. Opt. Soc. Am. 44(4) 315-321 (1954)

Absolute Thresholds for Moving Point Sources

M. A. Bouman and G. van den Brink
J. Opt. Soc. Am. 43(10) 895-898 (1953)

Spectral Sensitivity of the Fovea. I. Neutral Adaptation

Leo M. Hurvich and Dorothea Jameson
J. Opt. Soc. Am. 43(6) 485-494 (1953)

The Effect on Foveal Vision Produced by a Spot of Light on the Sclera Near the Margin of the Retina

Glenn A. Fry and Mathew Alpern
J. Opt. Soc. Am. 43(3) 187-188 (1953)