Accession Number : AD0826134

Title :   ACCOMMODATION EFFECTS IN MULTI-COLOR DISPLAYS.

Descriptive Note : Technical rept. Jun-Dec 66,

Corporate Author : BUNKER-RAMO CORP CANOGA PARK CA

Personal Author(s) : Myers, William S.

Report Date : DEC 1967

Pagination or Media Count : 33

Abstract : The study sought to investigate accommodation effects with simultaneous exposure of two colors in a single display. Combinations of red and blue color were used for the Landolt C-ring stimuli and the portion of the screen surrounding the stimuli. Definite visual effects were reflected by significant differences in performance (i.e., number of correct responses to C-ring aperture position). Decrement in performance appears to be a function of the particular color employed rather than the result of a re-accommodation problem between two colors. Myopia with exposure to the blue colored stimuli resulted in fewer number of correct responses for these conditions. A significant interaction was noted. Size of the C-ring aperture was shown to be of significant consequence in affecting performance differences between color combinations. Larger aperture size tended to compensate for the induced myopia with the blue stimuli. This was evidenced by the fact that performance with the blue stimuli improved at the larger sizes and approached that with the red stimuli at the smaller sizes. The significance of these findings is discussed in terms of practical applications. Note is also made regarding the relevancy of the study as a guide of factors to be considered in future studies involving visual effects with the use of multi-color displays. (Author)

Descriptors :   *VISUAL ACUITY), (*DISPLAY SYSTEMS, COLORS), (*COLOR VISION, HUMAN FACTORS ENGINEERING, ADAPTATION(PHYSIOLOGY), BRIGHTNESS, RESPONSE(BIOLOGY), THRESHOLDS(PHYSIOLOGY), INTERACTIONS, PERFORMANCE(HUMAN).

Subject Categories : Human Factors Engineering & Man Machine System

Distribution Statement : APPROVED FOR PUBLIC RELEASE