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Vision
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Vision Research in Québec: Selected Papers from the 25th Annual...
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Vision Research in Québec: Selected Papers from the 25th Annual Meeting of the Vision Health Research Network

A special issue of Vision (ISSN 2411-5150).

Deadline for manuscript submissions: closed (20 December 2023) | Viewed by 6059

Special Issue Editors

Prof. Dr. Dave Saint-Amour

E-Mail Website
Guest Editor
Department of Psychology, Université du Québec à Montréal, Montréal, QC, Canada
Interests: amblyopia; strabismus; autism; visual toxicity; environnemental chemical; visual evoked potentials
Dr. Alexandre Reynaud

E-Mail Website
Guest Editor
Department of Ophthalmology & Visual Sciences, McGill University, Montreal, QC, Canada
Interests: stereoscopic vision and binocular fusion in the human visual system using psychophysics; magnetoencephalography and computational approaches

Special Issue Information

Dear Colleagues,

The Vision Health Research Network (VHRN; http://visionnetwork.ca) was funded in Québec (Canada) in 1995. It brings together nearly 130 principal investigators and 200 graduate students, residents, and postdoctoral trainees who are members of either of the research axes of the VHRN, which cover all areas of vision health from a fundamental to clinical perspective. The VHRN supports common infrastructures to provide unique resources and tools to promote vision research.

Each year, the annual meeting is a unique opportunity to stimulate interactions between students, academic researchers, and clinician researchers, to present new research results and to discover advances in vision health research. The VHRN did celebrate its 25th annual meeting in November 2022 in Montreal. The keynote speaker was Dr. Michele Rucci. Dr. Rucci is a neuroscientist and professor at the University of Rochester (New York, USA) in Brain and Cognitive Sciences, Center for Visual Science. He is a leading investigator in computational mechanisms of visual functions and cognitive neuroscience. He has made fundamental contributions to the implementation of new systems for head/eye tracking and visual display and the design of efficient machine vision systems. The meeting included more than 100 scientific communications in the form of talks and posters on a variety of topics, including but not limited to ocular diseases, genetics, cellular mechanisms, perception, and visual impairment and rehabilitation. This Special Issue captures part of the breadth of research presented at VHRN’s 2022 edition by proposing original and outstanding contributions.

Prof. Dr. Dave Saint-Amour
Dr. Alexandre Reynaud
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Vision is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (4 papers)

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Research

16 pages, 3100 KiB  
Article
The Random Step Method for Measuring the Point of Subjective Equality
by Penghan Wang and Alexandre Reynaud
Vision 2023, 7(4), 74; https://doi.org/10.3390/vision7040074 - 15 Nov 2023
Viewed by 1236
Abstract
Points of Subjective Equality (PSE) are commonly measured using staircase or constant stimuli methods. However, the staircase method is highly dependent on the step size, and the constant stimuli method is time-consuming. Thus, we wanted to develop an efficient and quick method to [...] Read more.
Points of Subjective Equality (PSE) are commonly measured using staircase or constant stimuli methods. However, the staircase method is highly dependent on the step size, and the constant stimuli method is time-consuming. Thus, we wanted to develop an efficient and quick method to estimate both the PSE and the slope of the psychometric function. We developed a random-step algorithm in which a one-up-one-down rule is followed but with a random step size in a pre-defined range of test levels. Each stimulus would be chosen depending on the previous response of the subject. If the subject responded “up”, any random level in the lower range would be picked for the next trial. And if the subject responded “down”, any random level in the upper range would be picked for the next trial. This procedure would result in a bell-shaped distribution of the test levels around the estimated PSE, while a substantial amount of trials would still be dispersed at both bounds of the range. We then compared this method with traditional constant stimuli procedure on a task based on the Pulfrich phenomenon while the PSEs of participants could be varied using different neutral density filters. Our random-step method provided robust estimates of both the PSE and the slope under various noise levels with small trial counts, and we observed a significant correlation between the PSEs obtained with the two methods. The random-step method is an efficient way to measure the full psychometric function when testing time is critical, such as in clinical settings. Full article
(This article belongs to the Special Issue Vision Research in Québec: Selected Papers from the 25th Annual Meeting of the Vision Health Research Network)
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12 pages, 883 KiB  
Article
Screen Time at 6 Years Old and Visual Function in Early Adolescence
by Mathilde Champagne-Hamel, Christine Monfort, Cécile Chevrier and Dave Saint-Amour
Vision 2023, 7(4), 63; https://doi.org/10.3390/vision7040063 - 23 Sep 2023
Viewed by 1708
Abstract
Excessive screen time has been linked to adverse health outcomes in children, including vision-related problems such as myopia. However, very few studies have evaluated the effect of moderate screen exposure on the development of visual functions. This study aimed to examine the association [...] Read more.
Excessive screen time has been linked to adverse health outcomes in children, including vision-related problems such as myopia. However, very few studies have evaluated the effect of moderate screen exposure on the development of visual functions. This study aimed to examine the association between screen time during middle childhood and color discrimination, contrast sensitivity, and short-range visual acuity in 12-year-old children (n = 305) from the mother–child PELAGIE cohort (France) for the whole sample and for boys and girls separately. Visual functions were assessed using the Freiburg Acuity and Contrast Test and an adapted version of the Cambridge Color Test. Screen exposure was documented using a parent self-report questionnaire. Regression models showed that screen exposure at 6 years of age was significantly associated with higher contrast sensitivity across the entire sample at 12 years of age. However, when controlling for covariates, this association remained statistically significant in girls only. Sex-stratified analyses also showed that moderate screen exposure was linked to improved tritan-axis color vision in boys only. These findings suggest that moderate screen exposure in middle childhood is not harmful to visual function development and as such, provide new insights into the impact of digital technology on children’s visual health and development. Full article
(This article belongs to the Special Issue Vision Research in Québec: Selected Papers from the 25th Annual Meeting of the Vision Health Research Network)
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11 pages, 1152 KiB  
Article
Impact of the COVID-19 Pandemic on Mental Health among Patients with Chronic Ocular Conditions
by Soumaya Bouhout, Mélanie Hébert, Weronika Jakubowska, Laurence Jaworski, Ellen E. Freeman and Marie-Josée Aubin
Vision 2023, 7(3), 49; https://doi.org/10.3390/vision7030049 - 11 Jul 2023
Viewed by 1101
Abstract
The COVID-19 pandemic had significant impacts on the mental and visual health of patients. This cross-sectional, survey-based, multicentric study evaluates the state of mental and visual health among patients with chronic ocular diseases such as glaucoma, neovascular age-related macular degeneration, diabetic retinopathy, or [...] Read more.
The COVID-19 pandemic had significant impacts on the mental and visual health of patients. This cross-sectional, survey-based, multicentric study evaluates the state of mental and visual health among patients with chronic ocular diseases such as glaucoma, neovascular age-related macular degeneration, diabetic retinopathy, or chronic uveitis during the lockdown period of the COVID-19 pandemic. Mental health was assessed using three questionnaires: the Patient Health Questionnaire-9 (PHQ-9), the Impact of Event Scale-Revised (IES-R), and the National Eye Institute Visual Function Questionnaire-25 (VFQ-25). A total of 145 patients completed the questionnaires. The PHQ-9 showed that most respondents (n = 89, 61%) had none or minimal depressive symptoms, while 31 (21%) had mild depressive symptoms, 19 (13%) had moderate depressive symptoms, 5 (3%) had moderately severe depressive symptoms, and 1 (1%) had severe depressive symptoms. Regarding stress surrounding the pandemic, the median IES-R showed mild distress in 16 (11%), moderate distress in 7 (5%), and severe distress in 4 (3%). The COVID-19 pandemic lockdowns had a negative impact on patients’ mental health with close to 20% of the patients reporting at least moderately depressive symptoms and 19% reporting at least mildly distressful symptoms. Full article
(This article belongs to the Special Issue Vision Research in Québec: Selected Papers from the 25th Annual Meeting of the Vision Health Research Network)
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10 pages, 653 KiB  
Article
The Mental Health State of Canadian Ophthalmologists during the COVID-19 Pandemic: A Survey-Based Study and Review
by Mélanie Hébert, Soumaya Bouhout, Ellen E. Freeman and Marie-Josée Aubin
Vision 2023, 7(1), 23; https://doi.org/10.3390/vision7010023 - 17 Mar 2023
Cited by 1 | Viewed by 1474
Abstract
The coronavirus disease 2019 (COVID-19) pandemic disrupted the practice of medicine, causing stress and uncertainty among ophthalmologists. This cross-sectional, survey-based study of Canadian Ophthalmological Society members (n = 1152) aims to report on Canadian ophthalmologists’ mental health during the COVID-19 pandemic. Four [...] Read more.
The coronavirus disease 2019 (COVID-19) pandemic disrupted the practice of medicine, causing stress and uncertainty among ophthalmologists. This cross-sectional, survey-based study of Canadian Ophthalmological Society members (n = 1152) aims to report on Canadian ophthalmologists’ mental health during the COVID-19 pandemic. Four questionnaires were administered between December 2020 and May 2021: the Patient Health Questionnaire-9 (PHQ-9), Generalized Anxiety Disorder-7 (GAD-7), the 7-item Insomnia Severity Index (ISI), and the Impact of Event Scale—Revised (IES-R). From all of the responses, 60/85 answers were deemed complete and were included. The median age was 50–59 years and 53% were women. On PHQ-9, most respondents had no or minimal depressive symptoms (n = 38, 63%), while 12% (n = 7) had moderately severe depressive symptoms and 12% (n = 7) reported impaired daily functioning and/or thoughts of suicide or self-harm. On the GAD-7 scale, 65% (n = 39) had no significant anxiety, while 13% (n = 8) had moderate to severe anxiety. Most respondents did not have clinically significant insomnia (n = 41, 68%). Finally, 16 respondents (27%) had an IES-R score ≥24 suggesting possible post-traumatic stress disorder. No significant differences were found based on demographics. During the COVID-19 pandemic, up to 40% of respondents experienced varying degrees of depression, anxiety, insomnia, and distress from the event. In 12%, there were concerns for impaired daily functioning and/or suicidal thoughts. Full article
(This article belongs to the Special Issue Vision Research in Québec: Selected Papers from the 25th Annual Meeting of the Vision Health Research Network)
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