Abstract

The effects of artificial aniseikonic errors on the moving-rod type of depth-perception test were studied in two subjects. Aniseikonia in the horizontal meridian produced a constant error in the setting of the movable rod whose direction and magnitude varied with the direction and magnitude of the aniseikonia. In the Howard-Dolman test the constant errors were only one-third to one-half those predicted from the binocular disparity. In a modified test in which opposing monocular cues were eliminated, the settings showed the expected constant errors of about 65 mm for each one percent difference in the size of the ocular images. The mean variation about the average position of subjective equidistance showed considerable day-to-day variation.

© 1953 Optical Society of America

Effects of Viewing Distance with the Howard-Dolman Apparatus

Warren H. Teichner and John L. Kobrick
J. Opt. Soc. Am. 46(10) 837-840 (1956)

Meridional Magnifying Lens Systems in the Measurement and Correction of Aniseikonia

Kenneth N. Ogle
J. Opt. Soc. Am. 34(6) 302-312 (1944)

Precision and Validity of Stereoscopic Depth Perception from Double Images*

Kenneth N. Ogle
J. Opt. Soc. Am. 43(10) 906-913 (1953)

Factors Affecting Differences in Apparent Size Between Opposite Halves of a Visual Meridian*

Kenneth T. Brown
J. Opt. Soc. Am. 43(6) 464-472 (1953)

Aniseikonia*

Gordon H. Gliddon
J. Opt. Soc. Am. 30(4) 142-144 (1940)