The impact of soft contact lens surface and optics on symptoms associated with digital eye fatigue in symptomatic soft contact lens wearers

Kollbaum, Pete; Meyer, Dawn; Reed, Olivia; Jaskulski, Matt; Rickert, Martin E.; Bradley, Arthur; Kollbaum,

doi:10.1016/j.clae.2019.10.120

Cited by 2 publications

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“…Hence, the lens’s design was able to diminish regulatory muscle activity, leading in turn to reduced eye tiredness. Similarly, multifocal soft contact lenses were shown to reduce accommodative demand at near distance tasks on digital screens, which in turn reduced eye fatigue [ 45 ]. Given the similar multifocal setup of the DIMS lenses, the added power in the peripheral zones, which leads to the desired main effect of a retardation of elongational axial length, at the same time may be able to reduce the accommodative muscle stress, resulting in an age-independent reduction in eye fatigue.…”

Section: Discussionmentioning

confidence: 99%

Myopia-correcting lenses decrease eye fatigue in a visual search task for both adolescents and adults

Ryu

Wallraven

2021

PLoS ONE

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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.

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Section: Discussionmentioning

confidence: 99%

Myopia-correcting lenses decrease eye fatigue in a visual search task for both adolescents and adults

Ryu

Wallraven

2021

PLoS ONE

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“…When exposed to a cognitive burden for an extended length of time, people often exhibit time-on-task (TOT) effects, in which performance deteriorates gradually with the duration of task engagement (Lim et al, 2010 ). The resulting subjective mental fatigue, however, may be reduced by modulating muscle stress (Thorud et al, 2012 ; Kollbaum et al, 2019 ; Kajita et al, 2020 ), via lower attentional load from the blurred peripheral input (via interactions between attention and defocus blur as shown in (De Lestrange-Anginieur et al, 2021 ), for example), or even via enhanced ocular blood perfusion (Leske, 2009 )—further studies are necessary from an ophthalmological perspective in this context. In addition to this main effect, however, we also identified several correlations between measures: As may be expected, subjective fatigue and perceived difficulty were positively correlated—this result is in line with previous studies that have shown that increasing task difficulty plays an important role in mental fatigue (Bafna et al, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

“…In our previous study (Ryu et al, 2021 ), we used this task to investigate how fatigue induced by the demanding visual search would be impacted by the wearing of myopia-correcting lenses (so-called Defocus Incorporated Multiple Segments, or DIMS lenses); surprisingly, we found that across both adolescent and adult participants, wearing the DIMS lenses compared to control lenses significantly reduced visual fatigue levels (at similar levels of performance). Specifically, the DIMS lenses showed an average of 23% reduction in fatigue levels compared to the control lenses—a phenomenon that may have physiological origins due to the eye's responses changing with the lens properties (Kollbaum et al, 2019 ; Kajita et al, 2020 ), but also due to perceptual and cognitive aspects of spatial attention processes (Lane et al, 2013 ; Cona and Scarpazza, 2019 ; De Lestrange-Anginieur et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Decoding visual fatigue in a visual search task selectively manipulated via myopia-correcting lenses

Ryu,

Ju,

Wallraven

2024

Front. Neurosci.

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IntroductionVisual fatigue resulting from sustained, high-workload visual activities can significantly impact task performance and general wellbeing. So far, however, little is known about the underlying brain networks of visual fatigue. This study aimed to identify such potential networks using a unique paradigm involving myopia-correcting lenses known to directly modulate subjectively-perceived fatigue levels.MethodsA sample of N = 31 myopia participants [right eye-SE: –3.77D (SD: 2.46); left eye-SE: –3.75D (SD: 2.45)] performed a demanding visual search task with varying difficulty levels, both with and without the lenses, while undergoing fMRI scanning. There were a total of 20 trials, after each of which participants rated the perceived difficulty and their subjective visual fatigue level. We used representational similarity analysis to decode brain regions associated with fatigue and difficulty, analyzing their individual and joint decoding pattern.Results and discussionBehavioral results showed correlations between fatigue and difficulty ratings and above all a significant reduction in fatigue levels when wearing the lenses. Imaging results implicated the cuneus, lingual gyrus, middle occipital gyrus (MOG), and declive for joint fatigue and difficulty decoding. Parts of the lingual gyrus were able to selectively decode perceived difficulty. Importantly, a broader network of visual and higher-level association areas showed exclusive decodability of fatigue (culmen, middle temporal gyrus (MTG), parahippocampal gyrus, precentral gyrus, and precuneus). Our findings enhance our understanding of processing within the context of visual search, attention, and mental workload and for the first time demonstrate that it is possible to decode subjectively-perceived visual fatigue during a challenging task from imaging data. Furthermore, the study underscores the potential of myopia-correcting lenses in investigating and modulating fatigue.

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The impact of soft contact lens surface and optics on symptoms associated with digital eye fatigue in symptomatic soft contact lens wearers

Cited by 2 publications

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Myopia-correcting lenses decrease eye fatigue in a visual search task for both adolescents and adults

Myopia-correcting lenses decrease eye fatigue in a visual search task for both adolescents and adults

Decoding visual fatigue in a visual search task selectively manipulated via myopia-correcting lenses

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