Quantitative assessment of visual acuity in projective head-mounted displays

2003 ◽  
Author(s):  
Cali M. Fidopiastis ◽  
Catherine Meyer ◽  
Christopher A. Fuhrman ◽  
Jannick P. Rolland
Keyword(s):  
Visual Acuity ◽  
Quantitative Assessment ◽  
Head Mounted Displays

Stereo acuity and visual acuity in head mounted displays

2006 ◽  
Author(s):  
Frank L. Kooi ◽  
Piet Bijl ◽  
Pieter Padmos
Keyword(s):  
Visual Acuity ◽  
Head Mounted Displays ◽  
Stereo Acuity

scholarly journals Characterization of Visual Acuity and Contrast Sensitivity using Head-Mounted Displays in a Virtual Environment: A Pilot Study

2019 ◽  
Vol 63 (1) ◽  
pp. 547-551
Author(s):  
David Sproule ◽  
Rosemarie Figueroa Jacinto ◽  
Steve Rundell ◽  
Jacob Williams ◽  
Sam Perlmutter ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Virtual Reality ◽  
Pilot Study ◽  
Contrast Sensitivity ◽  
Virtual Environment ◽  
Real World ◽  
Appropriate Use ◽  
Head Mounted Displays ◽  
Visualization Tools

Virtual reality (VR) and personal head-mounted displays (HMDs) can be a viable tool for the presentation of scientifically accurate and valid demonstrative data in the courtroom. However, the capabilities and limitations of the technology need to be fully characterized. The current pilot study evaluated visual acuity and contrast sensitivity using two commercially available HMDs (Oculus Rift and HTC Vive Pro). Preliminary findings indicated that visual acuity and contrast sensitivity experienced in VR may be less than what is experienced in real-world scenarios. The current pilot study provides a quantitative approach for characterizing the limitations of VR with respect to visual acuity and contrast sensitivity, and provides recommendations for the appropriate use of this technology when performing forensic investigations and developing visualization tools.

scholarly journals Quantitative Assessment of Outer Retinal Layer and Photoreceptor Outer Segment Layer and Their Relation to Visual Acuity in Diabetic Macular Edema

2019 ◽  
Vol 2019 ◽  
pp. 1-5
Author(s):  
Ahmed Hosni Abd Elhamid
Keyword(s):  
Visual Acuity ◽  
Macular Edema ◽  
Diabetic Macular Edema ◽  
Quantitative Assessment ◽  
Outer Segment ◽  
Retinal Layer ◽  
Moderate Correlation ◽  
Weak Correlation ◽  
Photoreceptor Outer Segment ◽  
Corrected Visual Acuity

Purpose. To compare outer retinal layer (ORL) thickness and photoreceptor outer segment (PROS) length between normal eyes and eyes with diabetic macular edema (DME), and also, to study the correlation between central macular thicknesses (CMT), ORL, and PROS length with best corrected visual acuity (BCVA) in DME. Methods. 80 eyes were included in the study; they were divided into two groups, group Ι (40 normal eyes) and group ΙΙ (40 eyes) with DME. Complete ophthalmic examination and OCT were done for all eyes. Comparison between ORL and PROS was done between both groups; also, correlation between ORL thickness, PROS length, and CMT with BCVA in group ΙΙ was studied. Results. CMT was greater in group ΙΙ than group Ι (392.70 ± 62.91 and 265.73 ± 17.17, respectively) (SS, p<0.001). ORL thickness was statistically significantly greater in group Ι than group ΙΙ (104.80 ± 4.94, 93.68 ± 6.34, p<0.001). Regarding PROS length, it was statistically significantly greater in group Ι than group ΙΙ (31.38 ± 3.4 and 26.65 ± 3.39, respectively, p<0.001). There was moderate correlation between BCVA and ORL thickness (r = −0.440, p=0.004) and strong correlation between BCVA and PROS length in group ΙΙ (r = − 0.690, p<0.001), while there was weak correlation between BCVA and CMT (r = 0.198, p=0.220). Conclusion. Both ORL thickness and PROS length were greater in healthy normal eyes than eyes with DME. BCVA was correlated better with PROS length and ORL thickness than CMT.

Characterizing Visual Acuity in the Use of Head Mounted Displays

2021 ◽  
pp. 589-607
Author(s):  
Vladimir Soares da Fontoura ◽  
Anderson Maciel
Keyword(s):  
Visual Acuity ◽  
Head Mounted Displays

scholarly journals Methodology for the Iterative Evaluation of Prototype Head-Mounted Displays in Virtual Environments: Visual Acuity Metrics

2005 ◽  
Vol 14 (5) ◽  
pp. 550-562 ◽  
Author(s):  
Cali Fidopiastis ◽  
Christopher Fuhrman ◽  
Catherine Meyer ◽  
Jannick Rolland
Keyword(s):  
Visual Acuity ◽  
Virtual Environments ◽  
Performance Metrics ◽  
Total System ◽  
Assessment Protocol ◽  
Head Mounted Display ◽  
Prototype Development ◽  
Light Levels ◽  
Head Mounted Displays ◽  
Projection Display

Head-mounted display design is an iterative process. As such, a standardized user-centered assessment protocol of head-mounted performance during each phase of prototype development should be employed. In this paper, we first describe a methodology for assessing prototype head-mounted displays and virtual environments using visual performance metrics. We then present an application of the methodology using a prototype of a projection head-mounted display and the first module of our assessment: resolution visual acuity as a function of contrast. To evaluate the total system, we also used three different light levels and two different types of projection materials. Results from both studies indicate that the visual acuity metric resolution accurately identified reductions in user visual acuity caused by parameters of the projection display and those of the phase conjugate material. Results further support the need for benchmark metrics that allow comparison of prototype head-mounted performance through each stage of design.

Sign in / Sign up

Export Citation Format

Share Document