Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Comparative Study
. 1990;228(4):310-5.
doi: 10.1007/BF00920053.

Effect of luminance and contrast on stereoscopic acuity

T Geib  1 , C Baumann
Affiliations
Comparative Study

Effect of luminance and contrast on stereoscopic acuity

T Geib et al. Graefes Arch Clin Exp Ophthalmol. 1990.

Abstract

The threshold of binocular depth perception was measured in 11 healthy volunteers. A three-rod arrangement was employed in which both the luminance of the rods and that of the adapting field could be adjusted independently. This allowed fixing the contrast when the effect of luminance was studied or fixing the luminance when the effect of contrast was investigated. The observation distance was 400 mm. Thresholds were expressed as angular disparities and were based on 75% correct responses. Points of subjective equality were also determined. Lowest thresholds (2.85 +/- 0.67 s of arc) were found for a moderate contrast of 0.5 whereas low (0.05) and high (0.95) contrast both produced significantly higher thresholds (luminance 250 cd/m2). Altering the field luminance (50, 250, 1600 cd/m2) under constant contrast conditions (0.95) did not measurably influence stereoscopic acuity.

PubMed Disclaimer

References

    1. Proc Natl Acad Sci U S A. 1948 May;34(5):223-7 - PubMed
    1. Nature. 1978 Sep 14;275(5676):126-7 - PubMed
    1. J Physiol. 1969 Jul;203(1):237-60 - PubMed
    1. Exp Brain Res. 1979 Aug 1;36(3):585-97 - PubMed
    1. AMA Arch Ophthalmol. 1958 Jan;59(1):4-17 - PubMed

Publication types