Evaluation of a liquid membrane-based tunable lens and a solid-state LIDAR camera feedback system for presbyopia

Agarwala, Rajat; Sanz, Olga Lukashova; Seitz, Immanuel P.; Reichel, Felix; Wahl, Siegfried

doi:10.1364/boe.471190

Cited by 10 publications

(9 citation statements)

References 19 publications

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“…Programmable Prescription Lenses. Utilizing focus-tunable lenses that may be adjusted to the user's prescription is a common technique [21], especially in displays such as VR headsets where the users view a display through magnifying lenses [7,17,19,20]. An alternative to these approaches, phase-only spatial light modulators, could also be used to form a programmable prescription correction lens [18].…”

Section: Related Workmentioning

confidence: 99%

ChromaCorrect: Prescription Correction in Virtual Reality Headsets through Perceptual Guidance

Akşit¹,

Güzel²,

Beyazian³

et al. 2023

Preprint

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A large portion of today\'s world population suffers from vision impairments and wears prescription eyeglasses. However, prescription glasses causes additional bulk and discomfort when used with Virtual Reality (VR) headsets, negatively impacting the viewer\'s visual experience. In this work, we remedy the usage of prescription eyeglasses with screens by shifting the optical complexity into the software. Our proposal is a prescription-aware rendering approach for providing sharper and more immersive imagery for screens, including VR headsets. To this end, we develop a differentiable display and visual perception model encapsulating the human visual system\'s display-specific parameters, color, visual acuity, and user-specific refractive errors. Using this differentiable visual perception model, we optimize the rendered imagery in the display using gradient-descent solvers. This way, we provide prescription glasses-free sharper images for a person with vision impairments. We evaluate our approach and show significant quality and contrast improvements for users with vision impairments.

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Section: Related Workmentioning

confidence: 99%

ChromaCorrect: Prescription Correction in Virtual Reality Headsets through Perceptual Guidance

Akşit¹,

Güzel²,

Beyazian³

et al. 2023

Preprint

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“…Automating the focus adjustment process is necessary to provide a more natural and convenient visual experience. Eye-tracking combined with distance sensors, such as LiDAR (Light Detection and Ranging) or stereo cameras, has been proposed and researched by various groups [2,20]. By simulating focus tunable lenses in a VR environment, researchers can compare control algorithms independently of the specific optical approaches used in different systems, such as liquid membrane [10,2] or liquid crystal-based lenses [16].…”

Section: Autofocalsmentioning

confidence: 99%

“…To overcome these limitations and cater to the dynamic gaze requirements of individuals with presbyopia, autofocal lenses offer a promising solution. By using focus tunable lenses that can dynamically adjust their optical power to focus on the currently fixated object, autofocals replicate the eye's natural accommodation mechanism [2,28,20,11]. This approach offers the potential for a more natural and convenient visual experience, providing clear focus at different viewing distances.…”

Section: Introductionmentioning

confidence: 99%

Simulation Tool for Optical Systems: Evaluating and Optimizing Autofocals and Beyond

Hosp,

Sauer,

Agarwala

et al. 2023

Preprint

Self Cite

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The development and evaluation of autofocal glasses require robust and efficient tools for assessing their performance in various real-world scenarios. This study presents a novel virtual reality (VR) simulation tool designed to evaluate the control algorithms of autofocal glasses. The tool incorporates a matching task involving Landolt rings and Sloan letters presented on different screens at varying distances and a NASA Task Load Index (TLX) questionnaire to assess participants' subjective workload and convenience. By employing this experimental design, we aimed to gain insights into the effectiveness and efficiency of the evaluated control algorithms for autofocals within our VR-based simulation tool. Our results indicate that the developed VR simulation tool provides a valuable platform for assessing the performance of autofocal glasses in a controlled environment, ultimately contributing to the development of more efficient and user-friendly autofocal glasses.

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“…Utilizing focus-tunable lenses that may be adjusted to the user’s prescription is a common technique [ 21 ], especially in displays such as VR headsets where the users view a display through magnifying lenses [ 7 , 17 , 19 , 20 ]. An alternative to these approaches, phase-only spatial light modulators, could also be used to form a programmable prescription correction lens [ 18 ].…”

Section: Related Workmentioning

confidence: 99%

ChromaCorrect: prescription correction in virtual reality headsets through perceptual guidance

Güzel¹,

Beyazian²,

Chakravarthula³

et al. 2023

Biomed. Opt. Express

View full text Add to dashboard Cite

A large portion of today’s world population suffers from vision impairments and wears prescription eyeglasses. However, prescription glasses cause additional bulk and discomfort when used with virtual reality (VR) headsets, negatively impacting the viewer’s visual experience. In this work, we remedy the usage of prescription eyeglasses with screens by shifting the optical complexity into the software. Our proposal is a prescription-aware rendering approach for providing sharper and more immersive imagery for screens, including VR headsets. To this end, we develop a differentiable display and visual perception model encapsulating the human visual system’s display-specific parameters, color, visual acuity, and user-specific refractive errors. Using this differentiable visual perception model, we optimize the rendered imagery in the display using gradient-descent solvers. This way, we provide prescription glasses-free sharper images for a person with vision impairments. We evaluate our approach and show significant quality and contrast improvements for users with vision impairments.

show abstract

Evaluation of a liquid membrane-based tunable lens and a solid-state LIDAR camera feedback system for presbyopia

Cited by 10 publications

References 19 publications

ChromaCorrect: Prescription Correction in Virtual Reality Headsets through Perceptual Guidance

ChromaCorrect: Prescription Correction in Virtual Reality Headsets through Perceptual Guidance

Simulation Tool for Optical Systems: Evaluating and Optimizing Autofocals and Beyond

ChromaCorrect: prescription correction in virtual reality headsets through perceptual guidance

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