Comparison of Visual Parameters Between Normal Individuals and People with Low Vision in a Virtual Environment

Gopalakrishnan, Sarika; Jacob, Chris Elsa Samson; Kumar, Meenakshi; Karunakaran, Vijay

doi:10.1089/cyber.2019.0235

Cited by 16 publications

(11 citation statements)

References 19 publications

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“…Two other studies evaluated the effect of visual field loss on functional vision using VR. 49 , 50 Gopalakrishnan et al, 49 for example, found that normal vision subjects performed better than low vision subjects in everyday tasks in a VR environment. They demonstrated that VR performance scores in patients with peripheral field loss (56.65) and central field loss (63.25) were lower ( P < 0.001) than normal vision subjects (87).…”

Section: Resultsmentioning

confidence: 99%

Virtual Reality and Augmented Reality in Ophthalmology: A Contemporary Prospective

Iskander

Ogunsola

Ramachandran

et al. 2021

Asia-Pacific Journal of Ophthalmology

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Purpose: Most published systematic reviews have focused on the use of virtual reality (VR)/augmented reality (AR) technology in ophthalmology as it relates to surgical training. To date, this is the first review that investigates the current state of VR/AR technology applied more broadly to the entire field of ophthalmology. Methods: PubMed, Embase, and CINAHL databases were searched systematically from January 2014 through December 1, 2020. Studies that discussed VR and/or AR as it relates to the field of ophthalmology and provided information on the technology used were considered. Abstracts, non–peer-reviewed literature, review articles, studies that reported only qualitative data, and studies without English translations were excluded. Results: A total of 77 studies were included in this review. Of these, 28 evaluated the use of VR/AR in ophthalmic surgical training/assessment and guidance, 7 in clinical training, 23 in diagnosis/screening, and 19 in treatment/therapy. 15 studies used AR, 61 used VR, and 1 used both. Most studies focused on the validity and usability of novel technologies. Conclusions: Ophthalmology is a field of medicine that is well suited for the use of VR/AR. However, further longitudinal studies examining the practical feasibility, efficacy, and safety of such novel technologies, the cost-effectiveness, and medical/legal considerations are still needed. We believe that time will indeed foster further technological advances and lead to widespread use of VR/AR in routine ophthalmic practice.

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Section: Resultsmentioning

confidence: 99%

Virtual Reality and Augmented Reality in Ophthalmology: A Contemporary Prospective

Iskander

Ogunsola

Ramachandran

et al. 2021

Asia-Pacific Journal of Ophthalmology

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“…Compared to sighted controls, low vision participants took twice as long to complete tasks in VR. People with peripheral vision loss took longer to complete tasks compared to people with central vision loss [36].…”

Section: Studyingmentioning

confidence: 90%

“…Studies that compared performance between sighted and low-vision participants can use VR headsets to make use of the high degree of experimental control and task flexibility that a virtual environment affords (e.g., [36]). While the previous simulation was tested via first-person perspective on a computer monitor, VR headsets allow for data collection in a fully simulated 3D environment.…”

Section: Studyingmentioning

confidence: 99%

Furthering Visual Accessibility with Extended Reality (XR): A Systematic Review

Kasowski¹,

Johnson²,

Neydavood³

et al. 2021

Preprint

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Over the past decade, extended reality (XR) applications have increasingly been used as assistive technology for people with low vision (LV). Here we present a systematic literature review of 216 publications from 109 different venues assessing the potential of XR technology to serve as not just a visual accessibility aid but also as a tool to study perception and behavior in people with low vision and blind people whose vision was restored with a visual neuroprosthesis. These technologies may be used to visually enhance a person's environment for completing daily activities, train LV participants with residual vision, or simulate either a specific visual impairment or the artificial vision generated by a prosthetic implant. We also highlight the need for adequate empirical evaluation, the broadening of end-user participation, and a more nuanced understanding of the suitability and usability of different XR-based accessibility aids.

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“…An excel sheet with all the matrices mentioned above was generated for each subject at the end of the assessment. (Gopalakrishnan, 2020)…”

Section: Spatial Orientationmentioning

confidence: 99%

Development of Immersive Virtual Reality Environment for Assessment of Functional Vision in people with Low Vision: A Pilot Study

et al. 2022

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Introduction: Virtual Reality technology helps in creating virtual environments for evaluation of visual performance of low vision individuals with holistic experience. The purpose of this study was to develop a virtual reality (VR) platform for the objective assessment of functional vision in patients with low vision in two categories, central and peripheral vision loss . Materials and methods: Focus group discussions (FGD) were organized to understand the difficulties faced on a day to day basis by patients with low vision. Based on the results of the focus group discussions, a virtual bank scenario incorporating specific visual tasks was developed. A pilot study was conducted which involved people with normal vision; low vision Patients secondary to central field loss (CFL) and peripheral field loss (PFL). Each subject completed all the tasks in the objective assessment; the data obtained from the assessment were further analyzed to understand the pattern. Results: Comparing the three groups, there was a significant difference in distance (central field loss was lowest) and near visual angle, and three visual search tasks (peripheral field loss was lowest). In assessing the time taken, peripheral field loss group was again found to take the most time to complete tasks. Conclusion: Based on a newly developed virtual reality platform, assessment of functional vision of specially abled persons could be tested and was inferior to that of normal sighted persons. in a close to realistic environment. Multiple visual tasks were performed in the virtual environment and the visual performance was compared among all three groups of participants. Participants were matched for age and gender. Irrespective of the nature of tasks, visual performance of the normal group seemed significantly better than people with CFL and PFL.

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Comparison of Visual Parameters Between Normal Individuals and People with Low Vision in a Virtual Environment

Cited by 16 publications

References 19 publications

Virtual Reality and Augmented Reality in Ophthalmology: A Contemporary Prospective

Virtual Reality and Augmented Reality in Ophthalmology: A Contemporary Prospective

Furthering Visual Accessibility with Extended Reality (XR): A Systematic Review

Development of Immersive Virtual Reality Environment for Assessment of Functional Vision in people with Low Vision: A Pilot Study

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