Investigation of the Relationship Between Subjective Symptoms of Visual Fatigue and Visual Functions

Zheng, Fuhao; Hou, Fang; Chen, Ruru; Mei, Jianhui; Huang, Pingping; Chen, Bingzhen; Wang, Yuwen

doi:10.3389/fnins.2021.686740

Cited by 25 publications

(20 citation statements)

References 48 publications

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“…This is in line with previous research which demonstrated low spatial‐contrast sensitivity in dry eyes 48 . In parallel, recent findings have suggested that visual fatigue is associated with changes in clinical visual measures and basic visual functions, including contrast sensitivity 49 . Conversely, in the present study, photopic and mesopic visual acuity was unchanged in both groups.…”

Section: Discussionsupporting

confidence: 93%

Changes in visual function and optical and tear film quality in computer users

Talens‐Estarelles

Mechó-García

McAlinden

et al. 2023

Ophthalmic Physiologic Optic

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Purpose To assess changes in visual function and optical and tear film quality in computer users. Methods Forty computer workers and 40 controls were evaluated at the beginning and end of a working day. Symptoms were assessed using the Quality of Vision questionnaire (QoV), 5‐item Dry Eye Questionnaire (DEQ‐5) and Symptom Assessment in Dry Eye version II (SANDE II). Tear film quality was evaluated using the Medmont E300 dynamic corneal topography tool to measure the tear film surface quality (TFSQ), TFSQ area and auto tear break‐up time (TBUT). Optical quality was assessed by measuring high, low and total ocular aberrations with a Hartmann–Shack wavefront sensor. Visual performance was assessed by measuring photopic and mesopic visual acuity, photopic and mesopic contrast sensitivity and light disturbance. Results Poorer DEQ‐5, QoV and SANDE II scores were obtained in computer workers at the end of the working day compared with controls (p ≤ 0.02). Computer workers exhibited a higher (worse) TFSQ and TFSQ area at visit 2 compared with visit 1 (p ≤ 0.04), while no significant differences in TBUT (p = 0.19) or ocular aberrations were observed (p ≥ 0.09). Additionally, both light disturbance (p ≤ 0.04) and mesopic and photopic contrast sensitivity worsened at several spatial frequencies (p ≤ 0.04) throughout the working day in computer workers, while visual acuity remained unchanged (p ≥ 0.07). In contrast, control subjects exhibited no decrease in any variable during the day. Conclusions While visual acuity remained unchanged, several aspects of visual function and quality of vision decreased over a day of computer use. These changes were accompanied by greater dry eye symptoms and tear film changes, which are likely to have played a fundamental role. The present study provides insight into new metrics to assess digital eye strain.

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Section: Discussionsupporting

confidence: 93%

Changes in visual function and optical and tear film quality in computer users

Talens‐Estarelles

Mechó-García

McAlinden

et al. 2023

Ophthalmic Physiologic Optic

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“…We believe that this finding is clinically important regardless of the underlying cause. Several studies have indicated a strong relationship between VF disorder and vision‐related symptoms as well the developmental‐perceptual status 39–41 . It is recommended that more studies be performed in this area.…”

Section: Discussionmentioning

confidence: 99%

“…Several studies have indicated a strong relationship between VF disorder and vision-related symptoms as well the developmentalperceptual status. [39][40][41] It is recommended that more studies be performed in this area. In addition, evaluating the effect of optometric vision therapy on the VF in diabetics requires further investigation.…”

Section: Discussionmentioning

confidence: 99%

Vision‐related symptoms, accommodative and binocular vision performance in young diabetics vs. normal controls

Nabovati

Khabazkhoob

Fayaz

et al. 2022

Ophthalmic Physiologic Optic

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Purpose To compare accommodative and binocular vision performance between young diabetic subjects and normal controls, and to investigate the correlation of accommodative/binocular indices with the severity of diabetes. Methods Thirty young subjects with diabetes mellitus (DM) and 30 age‐matched normal controls were recruited in this hospital‐based cross‐sectional study. DM was diagnosed by a haemoglobin A1c (HbA1c) higher than 6.5%. The status of vision‐related symptoms was examined by the convergence insufficiency symptoms survey (CISS). All participants underwent a complete optometric examination including visual acuity measurement, objective and subjective refraction, accommodative and binocular vision assessments. Results All study participants were between 18 and 40 years of age. There were no statistically significant differences in best‐corrected visual acuity (BCVA), sphere, cylinder and spherical equivalent refraction (SE) between the diabetes and control groups. The median near point of convergence (NPC) was significantly more remote in diabetics compared with the control group. Mean accommodative amplitude (AA) and vergence facility (VF) and the median monocular accommodative facility (AF) were significantly lower in diabetic subjects compared with normal controls. In addition, the median accommodative lag in the diabetic group was significantly higher than the control group. A significantly higher percentage of the diabetic group were symptomatic (26.6%), compared with the controls (6.6%). The NPC and accommodative lag showed a significant positive correlation with the HbA1c level, while VF, AA and AF exhibited a significant negative correlation with HbA1c. Conclusion Aspects of accommodative and binocular vision performance are strongly affected by DM. There is also a significant correlation between accommodative and binocular disorders with the severity of DM. A significant percentage of young subjects with DM have severe vision‐related symptoms.

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“…Stereoscopic visual fatigue (SVF) is an important problem hindering the development of stereoscopic display applications, especially virtual reality (VR) display applications for deep immersion. SVF, which can be manifested as blurred vision, diplopia and other binocular anomalies symptoms, is a state of weakness, easy fatigue, and unsustainable vision of a visual-related organ that occurs after viewing the stereoscopic content due to excessive load [ 1 , 2 , 3 , 4 ]. The long-term exposure to electronics-induced visual fatigue is associated with a variety of serious visual health problems, such as decreased retinal vision, optic neurasthenia, dry eyes, cataracts, and glaucoma [ 5 , 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Neural Research on Depth Perception and Stereoscopic Visual Fatigue in Virtual Reality

Guo

Kang

et al. 2022

Brain Sciences

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Virtual reality (VR) technology provides highly immersive depth perception experiences; nevertheless, stereoscopic visual fatigue (SVF) has become an important factor currently hindering the development of VR applications. However, there is scant research on the underlying neural mechanism of SVF, especially those induced by VR displays, which need further research. In this paper, a Go/NoGo paradigm based on disparity variations is proposed to induce SVF associated with depth perception, and the underlying neural mechanism of SVF in a VR environment was investigated. The effects of disparity variations as well as SVF on the temporal characteristics of visual evoked potentials (VEPs) were explored. Point-by-point permutation statistical with repeated measures ANOVA results revealed that the amplitudes and latencies of the posterior VEP component P2 were modulated by disparities, and posterior P2 amplitudes were modulated differently by SVF in different depth perception situations. Cortical source localization analysis was performed to explore the original cortex areas related to certain fatigue levels and disparities, and the results showed that posterior P2 generated from the precuneus could represent depth perception in binocular vision, and therefore could be performed to distinguish SVF induced by disparity variations. Our findings could help to extend an understanding of the neural mechanisms underlying depth perception and SVF as well as providing beneficial information for improving the visual experience in VR applications.

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Investigation of the Relationship Between Subjective Symptoms of Visual Fatigue and Visual Functions

Cited by 25 publications

References 48 publications

Changes in visual function and optical and tear film quality in computer users

Changes in visual function and optical and tear film quality in computer users

Vision‐related symptoms, accommodative and binocular vision performance in young diabetics vs. normal controls

Neural Research on Depth Perception and Stereoscopic Visual Fatigue in Virtual Reality

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