Related Experiment Video
Updated: Aug 19, 2026

Stereoacuity Improvement using Random-Dot Video Games
Published on: January 14, 2020
Stereopsis from a performance perspective
1Michigan College of Optometry, Ferris State University, Big Rapids, Michigan, USA. J_Saladin@ferris.edu
Purpose:
A patient can demonstrate a poor stereoscopic test or task performance for reasons inherent within the test/task itself for reasons dependent on normal physiology common to all human subjects, and also for reasons that are outside of normal physiology and are unique or idiosyncratic to a particular person's visual system. This article reviews the literature for the first two reasons, but emphasizes the pathophysiology involved in the idiosyncratic and abnormal reasons.
Results:
Using control systems analysis, it is shown that deficits in stereoscopic performance can be explained by reference to the quantitative aspect of stereoscopic threshold and qualitative aspects such as speed of response, reliability-robustness, and strength of percept. The relationship between fixation disparity and stereopsis is seen to be central to this explanation.
Conclusions:
Proceeding from diagnosis to treatment, control systems analysis offers physiologically based explanations for the corrective procedures necessary to ameliorate abnormal conditions. Several topics for applied research in stereopsis are suggested.
Related Concept Videos
Stereotype Content Model
Stereoisomers
Stereoisomerism
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
Sources of Self-Esteem II: Performance Feedback
Impression Management Techniques IV: Altercasting
Elaborative Rehearsals
The effectiveness of...

