文献类型：期刊文献

英文题名：Effects of Task Type and Task Duration on Visual Fatigue on Smartphones at Different Ages

作者：Huang, He[1];Chen, Shuguang[1];Yang, Chaoxiang[2]

机构：[1]Changzhou Univ, Coll Art & Design, Changzhou, Peoples R China;[2]East China Univ Sci & Technol, Sch Art Design & Media, Shanghai, Peoples R China

年份：2025

卷号：35

期号：3

外文期刊名：HUMAN FACTORS AND ERGONOMICS IN MANUFACTURING & SERVICE INDUSTRIES

收录：;EI(收录号：20251718292009);WOS:【SSCI(收录号:WOS:001497242400011)，SCI-EXPANDED(收录号:WOS:001497242400011)】；

基金：The authors thank Mr. Fei Deng and Huanxiao Yao from Changzhou Dedu Precision Instrument Co. Ltd for their help in equipment commissioning and testing during the experiment. The authors would like to express their gratitude to all the participants who took part in the experiment. The authors thank the anonymous reviewer for helpful comments on this paper. This study was supported by the Youth Foundation for Humanities and Social Sciences Research of the Ministry of Education of China (Grant 21YJC760029).

语种：英文

外文关键词：age; smartphone; task duration; task type; visual fatigue

摘要：This study investigated the effects of task type and task duration on visual fatigue on smartphones at different ages. A total of 24 young adults (21-29 years old) and 24 older adults (63-77 years old) participated in an experiment with two different tasks (reading and searching) on smartphones, where each task lasted 1 h. The change in critical fusion frequency (CFF) and the subjective visual fatigue score were used as physiological and subjective indices, respectively, to measure visual fatigue. The results showed that the participants experienced more severe visual fatigue in the reading task than in the searching task on smartphones. Both changes in CFF and increases in subject visual fatigue occurred earlier in the reading task than in the searching task. The participants' visual fatigue increased as the task duration increased, and physiological visual fatigue occurred significantly earlier than did subjective visual fatigue. Compared with younger adults, older adults experienced more subjective visual fatigue when the task complexity was higher and more physiological visual fatigue as task duration increased. Different arrangements of breaks should be considered according to different task types on smartphones to alleviate visual fatigue, and a short break interval every 15 min during the reading task and every 30 min during the searching task is recommended. Older adults not only need to avoid prolonged visual tasks on smartphones more but also should refrain from persisting in continuous visual work. They are in greater need of suspending visual tasks promptly as soon as they initially feel visual fatigue. In addition, designers and developers need to reduce the cognitive load brought by task complexity on smartphones to alleviate the perception of visual fatigue among older adults.