From: A solid frame for the window on cognition: Modeling event-related pupil responses Journal of Vision. 2016;16(3):28. doi:10.1167/16.3.28 Figure Legend: Steady-state pupil model. The relationship between steady-state pupil size and illuminance levels was predicted by an exponential function. For comparability, the inset shows the relationship between observed steady-state pupil sizes in millimeters and luminance levels in candelas per square meter. Date of download: 12/31/2017 The Association for Research in Vision and Ophthalmology Copyright © 2017. All rights reserved.