Accommodation and the Blind Spot

Holding, Dennis H.; Schmidt, J.

doi:10.1037/e665412011-499

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The Elastic-scale Hypothesis1

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2008

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“…Between the 3-m and 12-m viewing distances, the average focal distances increased from 1.43 to 2.06 m (plus 44%), and the average angular size of the blind spot decreased from 6.11 to 4.22 deg (minus 31%, the reciprocal value). Holding and Schmidt (1992) at the University of Louisville independently replicated this experiment with corresponding results.…”

Section: The Elastic-scale Hypothesismentioning

confidence: 71%

Focal Distance and the Pinhole Effect: Clues to the Mystery of the Apparent Size of Things

Roscoe¹,

Corl²

2008

Ergonomics in Design: The Quarterly of Human Factors Applicatio

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This article traces an ergonomics research odyssey that spanned more than half a century. It started in 1950 with an airplane equipped with a periscope that projected a forward-looking view on a screen above the instrument panel and ended with a partial explanation for the illusion of a shrinking moon as it rises from the horizon. The connecting links along the way are not easy to follow and fly in the face of current theory, but the experimental findings tie the apparent size of visible objects to the focal distance of the eyes. The findings also have practical applications to the design of imaging displays and virtual reality systems.

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Section: The Elastic-scale Hypothesismentioning

confidence: 71%