0364 Effects of a Blue Light–Reducing Laptop Display and Software on Objective and Perceived Sleep, Eye Strain, and Productivity

Abstract Introduction Exposure to blue light in the evening can suppress melatonin and impair sleep. While prior work has shown benefits of blue light–filtering screen protectors, less is known about integrated display and software solutions that automatically reduce blue light. This study evaluated the effects of a blue light-reducing laptop display and software on both objective sleep and self-reported outcomes. Methods Healthy adults (N=21; 62% female; M age=43) who reported regular laptop use after sunset completed a 9-week, in-home, pre–post study (three 3-week phases: baseline with their own laptop, Dell XPS with Eyesafe® Display, and the same laptop with Eyesafe® Pro Software). Objective sleep was measured nightly using a PSG-validated, noncontact biomotion device, SleepScore Max. Daily and end-of-period surveys assessed perceived sleep quality, eye strain, productivity, and well-restedness. Analyses used multilevel regression and paired t-tests (α=.05). Results Across > 700 nights, no significant differences in objective sleep metrics were observed. Display only: Participants reported higher sleep quality (+17%), more well-rested mornings (+19%), less eye strain (–23%), and greater productivity (+19%; all ps<.001). Display + software: Participants reported larger improvements: higher sleep quality (+28%), more well-rested mornings (+27%), less eye strain (–52%), and greater productivity (+29%; all ps<.001). Conclusion Although objective sleep remained stable, use of a blue light-reducing laptop display and software were associated with significant improvements in perceived sleep quality, eye comfort, and productivity, suggesting potential benefits for evening screen users. Support (if any) Eyesafe