Work

A unified formula for light-adapted pupil size

Year: 2012

Type: article

Abstract: The size of the pupil has a large effect on visual function, and pupil size depends mainly on the adapting luminance, modulated by other factors. Over the last century, a number of formulas have been proposed to describe this dependence. Here we review seven published formulas and develop a new unified formula that incorporates the effects of luminance, size of the adapting field, age of the observer, and whether one or both eyes are adapted. We provide interactive demonstrations and software implementations of the unified formula.

Source: Journal of Vision

DOI: 10.1167/12.10.12

Authors: Andrew B. Watson, John I. Yellott

Institutions: Ames Research Center, University of California, Irvine

Language: English

Topic: Visual perception and processing mechanisms

Subfield: Cognitive Neuroscience

Field: Neuroscience

Domain: Life Sciences

Open Access status: gold

Estimated APC paid: $1,850

Funders: National Aeronautics and Space Administration, Ames Research Center