Influences of Luminance and Accommodation Stimuli on Pupil Size and Pupil Center Location 2 3 Supported by Arc Discovery Grant Dp110102018 and Arc Linkage Grant Lp100100575 Disclosure: None for All Authors Figures: 8 (including 3 in Color)

(2014) Influences of luminance and accommodation stimuli on pupil size and pupil center location. Notice: Changes introduced as a result of publishing processes such as copy-editing and formatting may not be reflected in this document. For a definitive version of this work, please refer to the published source: Abstract 20 21 PURPOSE. To investigate effects of luminance and accommodation stimuli on pupil size 22 and pupil center location and their implications for progressive addition lens wear. 23 METHODS. Participants were young and older adult groups (n=20, 22±2 years, age range 24 18-25 years; n=19, 49±4 years, 45-58 years). A wave aberrometer included a relay system to 25 allow a 12.5°x11° background for the internal fixation target. Participants viewed the target 26 under a matrix of conditions with luminance levels 0.01, 3.7, 120 and 6100 cd/m² and with 27 accommodation stimuli up to 6 diopters in 2 diopter steps. Pupil sizes and their centers, 28 relative to limbus centers, were determined from anterior eye images.