Department of Brain and Cognitive Engineering, Korea University, Seoul, South Korea.
Department of Information Display, Kyunghee University, Seoul, South Korea.
PLoS One. 2021 Oct 13;16(10):e0258441. doi: 10.1371/journal.pone.0258441. eCollection 2021.
The steady, world-wide increase in myopia prevalence in children over the past decades has raised concerns. As an early intervention for axial-length-related myopia, correcting lenses have been developed (such as Defocus Incorporated Multiple Segment (DIMS) lenses), which have been shown to be effective in slowing myopia progression. Beyond this direct effect, however, it is not known whether such lenses also affect other aspects important to the wearer, such as eye fatigue, and how such effects may differ across age, as these lenses so far are typically only tested with adolescents. In the present work, we therefore investigated perceived fatigue levels according to lens type (normal vs DIMS) and age (adolescents vs adults) in a demanding visual search task ("Finding Wally") at two difficulty levels (easy vs difficult). Whereas age and difficulty did not result in significant differences in eye fatigue, we found a clear reduction of fatigue levels in both age groups when wearing the correcting lenses. Hence, the additional accommodation of these lens types may result in less strain in a task requiring sustained eye movements at near viewing distances.
在过去几十年中，儿童近视患病率的稳定、全球性增加引起了关注。作为与眼轴长度相关的近视的早期干预措施，已经开发出了矫正镜片（例如离焦型多焦点（DIMS）镜片），这些镜片已被证明可有效减缓近视进展。然而，除了这种直接作用之外，尚不清楚这种镜片是否还会影响佩戴者的其他重要方面，例如眼疲劳，以及这些影响在年龄上如何有所不同，因为迄今为止，这些镜片通常仅在青少年中进行测试。因此，在本工作中，我们根据镜片类型（普通镜片与 DIMS 镜片）和年龄（青少年与成年人），在两个难度级别（简单与困难）的视觉搜索任务（“寻找 Wally”）中，调查了感知到的疲劳水平。尽管年龄和难度并未导致眼疲劳有显著差异，但我们发现佩戴矫正镜片时，两个年龄组的疲劳水平均明显降低。因此，这些镜片类型的额外调节可能会减少在需要持续进行近距观看的眼动任务中的眼睛疲劳。
