| 1. |
- Baskaran, Karthikeyan, Senior Lecturer, 1983-, et al.
(author)
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Closed circuit driving performance in persons with quadrantanopia and hemianopia in Sweden
- 2016
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In: Scandinavian Journal of Optometry and Visual Science. - 1891-0882 .- 1891-0890. ; 9:2, s. 14-
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Journal article (peer-reviewed)abstract
- In Sweden, persons with homonymous visual field defects (HVFDs) are not allowed to drive and usually their driving licences are revoked. Although earlier studies (de Haan et al. 2014; Elgin et al. 2010) have shown that HVFDs do not necessarily impair practical fitness to drive, the Swedish transport agency does not allow them any on-road driving testing to prove their practical fitness to drive. The aim of this study was to evaluate driving performance in participants with visual field defects after acquired brain injury in a closed circuit driving track. Eleven former drivers with varying degrees of quadrantanopia and hemianopia after acquired brain damage were recruited for this study from the stroke rehabilitation department at Kalmar County Hospital. The median age of the participants was 55 years and their age ranged from 37 to 73 years. Driving performance was assessed by two experienced driving instructors. They graded the participants on a scale from 1 (major faults) to 5 (excellent) on the following five categories: manoeuvring the vehicle, risk assessment, traffic rules, visual scanning and situation awareness. The subject would pass the driving test only if they had scored 3 or more in each category. The subjects who passed the closed circuit driving track test were evaluated further with a driving simulator. Five (45%) out of 11 participants passed the driving test and were adjudged as fit to drive. The remaining six (55%) participants failed in at least one category. Three failed in visual scanning, two failed in manoeuvring and one failed in both the aforementioned categories as well as risk assessment. Three subjects who passed the closed circuit driving track test were also evaluated in a driving simulator. Out of the three subjects, only one was able to complete and pass the evaluation while the remaining two participants aborted the evaluation due to simulator sickness. Homonymous visual field defects do not necessarily impair fitness to drive. Therefore, an on-road assessment of practical fitness to drive should be allowed in Sweden for this population in the near future. The decision on practical fitness to drive cannot be based solely on the presence of visual field defects. A rehabilitation program aimed at improving safe driving should be put into practice with an on-road driving training and assessment procedure. It should be developed and implemented by experienced traffic inspectors as a complementary part of the decision to either issue or revoke a driving licence for this population.
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| 2. |
- Johansson, Oskar, 1978-, et al.
(author)
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Trends in Swedish Contact Lens Prescribing 2017
- 2019
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In: Scandinavian Journal of Optometry and Visual Science. - : Linnaeus University. - 1891-0882 .- 1891-0890. ; 12:1, s. 5-7
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Journal article (other academic/artistic)abstract
- Background: The purpose was to evaluate the trends of contact lens prescribing among Swedish optometrists in 2017.Materials and Methods: A standardized survey form was distributed to Swedish optometrists using their professional organisations, optometry chains, direct email, and by hand directly. They were asked to fill out the form for the ten contact lens fits performed after receipt of the survey form. Information was collected regarding age and sex of patient, fit/refit, lens design and material, modality and solution prescribed.Results: 57 forms were returned detailing 562 fits. The mean age of the patients was 37 yrs, and 65 % were female. 83 % were fitted for full-time wear and 27 % were managed as new fits. 94.7 % were soft contact lens fits and silicone hydrogel was the dominating material.Conclusions: When compared with data from Norway and Denmark, it is evident that daily disposables are more popular in these countries (74 %), whereas in Sweden it is monthly replacements (58 %). Otherwise, the results are similar to what has been reported from other parts of the world.
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| 3. |
- Mathisen, Torgeir S., et al.
(author)
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Stroke and vision : special topic call for papers
- 2023
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In: Scandinavian Journal of Optometry and Visual Science. - 1891-0882 .- 1891-0890. ; 16:2, s. 1-3
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Journal article (peer-reviewed)abstract
- Call for papers for special issue on vision and stroke Development of new knowledge in complex areas such as sequelae caused by stroke requires multifaceted and creative research. SJOVS therefore want to invite a broad range of researchers from all corners of the world to submit their manuscripts to be published in open access online within the special topic vision and stroke, and brain damage due to other causes. Topics may include, but are not limited to:- the best way of organising post stroke vision care, patients’ perspectives of living with post stroke visual impairments,- effective treatments and vision rehabilitation,- interdisciplinary interventions that include vision rehabilitation, innovative technological solutions for vision assessment and training,- how to raise awareness for vision issues among patients, and health care personnel.We encourage translational research, with a variety of methodologies, including qualitative, quantitative, mixed methods, or reviews to share knowledge about vision and stroke. Torgeir Solberg Mathisen Guest Editor António Filipe Macedo Associate Editor Helle K. Falkenberg Associate Editor
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| 4. |
- Miranda, Antonio Miguel, et al.
(author)
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Eye movements, convergence distance and pupil-size when reading from smartphone, computer, print and tablet
- 2018
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In: Scandinavian Journal of Optometry and Visual Science. - : The Norwegian Association of Optometry. - 1891-0882 .- 1891-0890. ; 11:1, s. 1-5
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Journal article (peer-reviewed)abstract
- This study investigated the use of eye-tracking glasses to monitor visual behaviour when reading from electronic devices and paper in free-viewing conditions. The Tobii-Pro-Glasses were used to monitor 20 subjects with normal vision during reading tasks. Reading was performed in a smartphone, computer, paper and tablet. Texts from the IReST-test were read in devices in a random order. Participants read one text in each device and then repeated the same task 1 hour later; in total each participant read eight different texts. The sequence for the devices was randomized. We found differences between devices for saccade amplitude, fixation duration, convergence distance and pupil size. Reading speed between computer and tablet was slightly different (8 words-per-minute) and pupil size reduced up to 20% in electronic devices compared to print. Behavioural changes observed whilst reading from different devices may reflect an attempt from readers to optimize performance. The need to maintain visual performance under different visual condition may lead to increased visual symptoms. Eye-tracking glasses could be a valuable tool to investigate visual aspects of digital strain.
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| 5. |
- Roth, Jenny, et al.
(author)
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Dry eye symptoms using the Ocular Surface Disease Index inSweden: a short report from a pilot study
- 2022
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In: Scandinavian Journal of Optometry and Visual Science. - : Norges optikerforbund. - 1891-0882 .- 1891-0890. ; 15:1, s. 1-8
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Journal article (peer-reviewed)abstract
- The aim of this study was to investigate the prevalence of dryeye symptoms in the Swedish population using a web-basedversion of the ocular surface disease index (OSDI).Aweb-basedversionoftheOSDIquestionswasimplementedin an online form using a software developed by Artologik. Thelink to the form was distributed via Linnaeus University socialmedia pages. Basic demographic information such as age, sexand county of residence was also collected.A total of 404 complete responses were received, 303 respon-dents (75%) were females, the median age = 39 (interquartilerange = 28–53) years, median OSDI-score = 19 (interquartilerange = 9–32). Crude prevalence of dry eye symptoms (cate-gories mild to severe) was 65% (95% CI = 62–75). The differencein prevalence between males and females was statistically sig-nificant (chi-square test,p=0.007).The current study found that the prevalence of dry eye symp-toms among a sample of the Swedish population was 65%.These results highlight the need to investigate further the preva-lence and risk factors for dry eye disease in the Swedish population.
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| 6. |
- Thorslund, Birgitta, 1976-, et al.
(author)
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Vision measurability and its impact on safe driving : a literature review
- 2016
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In: Scandinavian Journal of Optometry and Visual Science. - Linköping : Statens väg- och transportforskningsinstitut. - 1891-0882 .- 1891-0890. ; 9:1, s. 1-9
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Journal article (peer-reviewed)abstract
- Knowledge of measurability of vision and its impact on safe driving have been proven to be important to secure a safe traffic system. Several different approaches to measuring visual function in order to improve road safety have been identified around the world. A trend seen in the literature is that traditional vision tests are increasingly supplemented by cognitive tests.The purpose of this study was to provide an overview of visual capabilities that are important for safe driving. The study answered questions about the visual capabilities that are essential for safe driving; which tests are available and how they are used; and existing evidence for these tests.The literature review was based on database searches of TRID, Web of Science and PubMed. In total 128 scientific publications were included in the overview. The results provided an overview of international standards of vision required for driving a car. Moreover, the results were structured according to the different visual capabilities and a corresponding account of the diseases that may affect these capabilities; available tests and corroborating evidence for the test; and the manner in which these capabilities are important for safe driving. Two tests were highlighted based on the review: contrast sensitivity, and Useful Field of View.It was also concluded that 1) testing of vision should consist of several complementary tests, 2) good visual acuity is not alone sufficient for safe driving, and 3) tests including cognitive aspects can complement vision testing and improve the assessment of safe driving.
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