Comparability of two methods of estimating real-depth acuity

Ophthalmologica. 1975;171(3):224-35. doi: 10.1159/000307512.


The purpose of this study was to determine whether a motor adjustment (method of average error) and a verbal response (method of constant stimuli) procedure would yield comparable estimates of depth acuity using the classic Howard apparatus. The findings were that: (1) thresholds derived from the two procedures were not significantly correlated under either binocular or monocular viewing conditions; (2) essentially equivalent thresholds were derived from the two procedures under the binocular viewing condition; (3) thresholds derived from the verbal procedure were significantly higher than those derived from the motor adjustment procedure under monocular viewing conditions.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adolescent
  • Adult
  • Depth Perception*
  • Female
  • Form Perception*
  • Humans
  • Male
  • Vision Tests / methods
  • Visual Acuity*
  • Visual Perception