The effect of blue light filter on visual and task performance.

Autor: Usgaonkar UPS; Department of Ophthalmology, Goa Medical College and Hospital, Goa, India., Dessai SP; Optometry Intern, Goa Medical College and Hospital, Goa, India., Shetty A; Lecturer in Optometry, Goa Medical College and Hospital, Goa, India.
Jazyk: angličtina
Zdroj: Indian journal of ophthalmology [Indian J Ophthalmol] 2023 Dec 01; Vol. 71 (12), pp. 3707-3710. Date of Electronic Publication: 2023 Nov 20.
DOI: 10.4103/IJO.IJO_534_23
Abstrakt: Purpose: This study aimed to determine the effect of the blue light (BL) filter on the different tasks performed on a laptop on a daily basis.
Methods: Forty subjects were required to perform a 45-minute task on the laptop screen with or without the BL filter on two different days. In the first task, subjects were made to watch a video. In the second task, subjects were made to read a passage from the laptop for 3 minutes, and reading speed was calculated. In the third task, subjects were made to enter the data on the laptop. The time taken to fill in the data was recorded. After the completion of the task, questionnaires were administered. Pre- and post-task accommodative tests were performed.
Results: Forty emmetropes with a mean age of 21 ± 2 were recruited. In visual performance, the subjective response showed a significant difference in visual fatigue level with and without the filter. A statistically significant difference was seen in reading speed and data entry during task performance with and without the filter. Pre- and post-task accommodative parameters showed variable responses.
Conclusion: This study showed that the use of a BL filter improves task performance, but subjectively, people experienced more visual fatigue while using the filter.
(Copyright © 2023 Copyright: © 2023 Indian Journal of Ophthalmology.)
Databáze: MEDLINE
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