Recent understanding of binocular vision in the natural environment with clinical implications

Candy, T. Rowan; Cormack, Lawrence K.

doi:10.1016/j.preteyeres.2021.101014

Cited by 9 publications

(8 citation statements)

References 303 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The price one pays for using traditional psychophysics, however, is that experimental data take a long time to collect, and the experiments themselves can be tedious for observers to participate in. Although merely inconvenient in many laboratory settings, time and tedium become very real problems if one wants to make measurements in children or in clinical populations that might be unwilling or unable to produce a satisfactory number of trials ( Candy & Cormack, 2022 ). Moreover, instructions that seem simple for experienced psychophysical observers, such as “press the left arrow key when the stimulus appears to be moving left when it is in front of the screen, and the right arrow if it appears to be going the other way” might be confusing to young children and unintelligible to preverbal infants.…”

Section: Discussionmentioning

confidence: 99%

Continuous psychophysics shows millisecond-scale visual processing delays are faithfully preserved in movement dynamics

Burge,

Cormack

2024

Journal of Vision

Self Cite

View full text Add to dashboard Cite

Image differences between the eyes can cause interocular discrepancies in the speed of visual processing. Millisecond-scale differences in visual processing speed can cause dramatic misperceptions of the depth and three-dimensional direction of moving objects. Here, we develop a monocular and binocular continuous target-tracking psychophysics paradigm that can quantify such tiny differences in visual processing speed. Human observers continuously tracked a target undergoing Brownian motion with a range of luminance levels in each eye. Suitable analyses recover the time course of the visuomotor response in each condition, the dependence of visual processing speed on luminance level, and the temporal evolution of processing differences between the eyes. Importantly, using a direct within-observer comparison, we show that continuous target-tracking and traditional forced-choice psychophysical methods provide estimates of interocular delays that agree on average to within a fraction of a millisecond. Thus, visual processing delays are preserved in the movement dynamics of the hand. Finally, we show analytically, and partially confirm experimentally, that differences between the temporal impulse response functions in the two eyes predict how lateral target motion causes misperceptions of motion in depth and associated tracking responses. Because continuous target tracking can accurately recover millisecond-scale differences in visual processing speed and has multiple advantages over traditional psychophysics, it should facilitate the study of temporal processing in the future.

show abstract

Section: Discussionmentioning

confidence: 99%

Continuous psychophysics shows millisecond-scale visual processing delays are faithfully preserved in movement dynamics

Burge,

Cormack

2024

Journal of Vision

Self Cite

View full text Add to dashboard Cite

show abstract

“…According to the analysis in this study, the values of binocular visual function among Taiwan high-tech industrial engineers 26 were significantly different from the standard values and Taiwan Norms, and the actual values were mostly lower than the standard values. Previous studies indicated that technological developments 30 are one of the main factors that change the visual function; in addition, the overuse of near vision as well as excessive use of accommodation and cohesion, resulting in functional fatigue or rigidity, may lead to poor overall binocular visual performance 31 – 33 .…”

Section: Discussionmentioning

confidence: 99%

The status of binocular visual functions among Taiwan high-tech industry engineers and its correlation with computer vision symptom

Tsai,

Chen,

et al. 2024

Sci Rep

View full text Add to dashboard Cite

To analyze the status of binocular visual functions, the relationship between binocular visual function and computer vision-related symptoms in the high-tech industry group. The study sample was comprised of 33 participants aged between 20 and 40 years of age. After completing basic information and the Computer Vision Symptom Scale (CVSS-17) questionnaire, the participants underwent a comprehensive examination of binocular visual function. All data were statistically analyzed with SPSS V26.0 software. The value of the binocular vision function of the Taiwan high-tech industry group was significantly different compared with the Scheiman and Morgan standard value. Study subjects were generally found to exhibit larger exophoric at distance, which in turn might lead to a lower ability to maintain binocular fusion to a single image, or recover from fusional disruption at distance. Subjects also experienced accommodation and convergence problems at near at the same time. Age, gender, and refractive errors had no significant impact on CVSS-17 scores, only the duration of computer usage showed a significant effect, particularly for internal symptom factor (ISF) dimensions. In addition, the interaction between the ISF and external symptom factor resulted in more severe visual symptoms. Long-term use of electronic devices may lead to an imbalance in binocular vision function, thereby increasing or exacerbating visual symptoms. If the use of electronic devices is an unchangeable trend, interventions in prescription, visual training or the visual design of electronic products become worthwhile topics for development.

show abstract

“…According to the analysis in this study, the values of binocular visual function among Taiwan high-tech industrial engineers [24] were signi cantly different from the standard values and Taiwan Norms, and the actual values were mostly lower than the standard values. Previous studies indicated that technological developments [27] are one of the main factors that change the visual function; in addition, the overuse of near vision as well as excessive use of accommodation and cohesion, resulting in functional fatigue or rigidity, may lead to poor overall binocular visual performance [30][31][32] .…”

Section: Discussionmentioning

confidence: 99%

Correlation between Binocular Vision and CVSS-17 Questionnaire in Taiwan High-Tech Industry Engineers

Tsai

Chen

et al. 2023

Preprint

View full text Add to dashboard Cite

Purpose To analyze the relationship between binocular visual function and visual-related symptoms in the high-tech industry group. Methods The study sample was comprised of 33 participants aged between 20 and 40 years. After completing basic information and the CVSS-17 questionnaire, the participants underwent a comprehensive examination of binocular visual function. All data were statistically analyzed with SPSS V26.0 software. Results The value of the binocular vision function of the Taiwan high-tech industry group was significantly different compared with the Scheiman & Morgan standard value. Similar results were shown in the Taiwan binocular visual function standard study, which was conducted during 2020. Study subjects were generally found to exhibit larger exophoric at distance, which in turn might lead to a lower ability to maintain binocular fusion to a single image, or recover from fusional disruption at distance. Subjects also experienced accommodation and convergence problems at near at the same time. Only the daily computer use time had a significant impact on the CVSS17 scores, particularly for internal symptom factor (ISF) dimensions. The interaction between the ISF and external symptom factor (ESF) resulted in more severe visual symptoms in patients. Conclusion No research has demonstrated a relationship between dry eye and computer vision syndrome in high-tech industry professionals, specifically regarding binocular vision. This lack of evidence serves as the primary motivation for conducting this study.

show abstract

Recent understanding of binocular vision in the natural environment with clinical implications

Cited by 9 publications

References 303 publications

Continuous psychophysics shows millisecond-scale visual processing delays are faithfully preserved in movement dynamics

Continuous psychophysics shows millisecond-scale visual processing delays are faithfully preserved in movement dynamics

The status of binocular visual functions among Taiwan high-tech industry engineers and its correlation with computer vision symptom

Correlation between Binocular Vision and CVSS-17 Questionnaire in Taiwan High-Tech Industry Engineers

Contact Info

Product

Resources

About