Jae-Hyun Jung, Ph.D.

Harvard Medical School

Instructor in Ophthalmology, Department of Ophthalmology

Schepens Eye Research Institute of Massachusetts Eye and Ear

Investigator

Research Summary

Institutes/Centers of Excellence

Biography

Dr. Jung’s research focuses on the interface between optical/electrical systems and human vision. He aims to uncover the principles underlying human visual perception and apply them to improve low-vision aids, such as prism glasses and visual prostheses. He is studying optical devices and imaging systems to restore vision and rehabilitate people with visual impairments. He has applied novel light-field imaging system to improve visual prostheses for people with visual impairments, such as retinal/cortical implant and sensory substitution devices (SSDs). He has also developed visual field expansion devices (various prisms) for patients with hemianopia and for patients with acquired monocular vision. He has also developed real-time light-field microscopy that captures and then simultaneously represents entire 3D volumetric information of live specimens.

Download his CV [PDF] for more information.

Education

B.Sc., magna cum laude, Pusan National University, Busan, Korea (2007)
Ph.D., Electrical Engineering, Seoul National University, Seoul, Korea (2012)

Postgraduate Training

Seoul National University, Fellow (09/2012-11/2012)
Schepens Eye Research Institute of Mass. Eye and Ear, Harvard Medical School, Fellow (12/2012-10/2015)

Honors

2017: Alice J. Adler Fellowship: Schepens Eye Research Institute of Mass. Eye and Ear
2015: Best Paper of the Year by a Trainee: Schepens Eye Research Institute of Mass. Eye and Ear
2012: Basic Research Postdoctoral Fellowship: National Research Foundation of Korea
2012: Best Paper Award: Optical Society of Korea Summer Annual Meeting 2012, Optical Society of Korea (OSK)
2012: Student Travel Grant: Society for Information Display (SID) Display Week 2012, Society for Information Display (SID)
2011: Best Paper Award: International conference on 3D systems and applications (3DSA), Assoc. Realistic Media Industry
2011: Best Paper Award: Conference on Optoelectronics & Optical Communications (COOC) 2011, Optical Society of Korea (OSK)
2011: Best Researcher of the Year by PhD Student: School of Electrical Engineering, Seoul National University, Seoul, Korea
2010: Best Paper Award: Winter Annual Meeting 2010, Optical Society of Korea (OSK)
2009: Student Travel Grant: International Display Workshops (IDW) 2009, Society for Information Display (SID)
2009: Merck Young Scientist Award: International Meeting on Information Display (IMID) 2009, Society for Information Display (SID)
2008: Best Paper Award: Conference on Optoelectronics & Optical Communications (COOC) 2008, Optical Society of Korea (OSK)

His Story

Field Expansion in Patients with Visual Field Loss

Dr. Jung has been working to characterize conventional low-vision rehabilitation devices, and improve them using his expertise in optical engineering and display technologies. He has developed various prism devices (including a novel multiplexiging prism that permits both see-through and shifted views) for patients with homonymous and bitemporal hemianopia and monocular vision using various prism devices.

The visual fields of patients using the proposed devices with a cosmetically acceptable design are expanded by about 40 degrees, achieving one of the best performances in field expansion devices. It can also expand the far peripheral visual field of a person with normal vision, which can be useful to a motorcyclist, bike rider, or soldier.

He also investigated the impact of using a high-angle of incidence with prisms, and how this affects prism power, and thereby provides accurate information about the effective fitting of prism devices for field expansion. He is pursuing the development of other types of optical devices for field expansion of patients with visual field loss to increase fidelity and contrast. He is actively working with field loss patients.

Novel Imaging System for Visual Prostheses

Since 2007, Dr. Jung has proposed several light-field 3D imaging and display systems that use a micro lens array to capture and represent whole 3D rays within a single shot of elemental image. These systems permit real-time capturing and reconstruction of 3D volume data, as well as confocal image generation. He has applied this novel imaging system to improve visual prostheses for people with visual impairments, such as retinal/cortical implant and sensory substitution devices (SSDs).

The proposed active confocal imaging system will remove background clutter from images and improve detection of possible objects of interest. It will be applicable to any type of visual prosthesis, including cortical/retinal implants, SSDs, and optogenetics.

Dr. Jung was awarded a research grant from the Swedish Promobilia Foundation for a pilot study and received the award for best paper of the year by a trainee at Schepens Eye Research Institute of Mass. Eye and Ear. Moreover, he was also recently awarded U.S. Department of Defense (DoD) grant to develop the system. For this latter grant he focuses on a more elaborate study involving object recognition, visual search, and mobility test to find better representations for visual prostheses to aid people with visual impairments.

Dr. Jung has developed several 3D displays, including novel light-field displays that show multiple views of 3D scenes without requiring special glasses to view the scenes. His research focus has shifted from technology development to human factors, particularly the comfort of 3D display users. He has investigated the impact of light-field displays in accommodation and convergence responses, and recently focused on motion sickness in VR head-mounted displays induced by spatial distortions.

Real-time Light-Field Microscopy

Dr. Jung has also developed real-time light-field microscopy that captures and then simultaneously represents entire 3D volumetric information of live specimens. This novel microscopy system can capture the 3D live movements of specimens. It features a multi-view 3D display, without the need for special glasses, to share with multiple observers.

Projects

Research Interests

  • Visual field loss (hemianopia, retinitis pigmentosa, acquired monocular vision, etc.)

Retinal Cortical Implant, Sensory Substitution Devices

This research examines the interface between optical/electrical systems and human vision, 3D imaging, and display systems that restore vision and rehabilitate people with visual impairments.

Visual Field Expansion through Innovative Multiplexing Prism Design

Patients with acquired monocular vision (AMV) are missing a temporal crescent on the affected side, while patients with bitemporal hemianopia (BH) due to lesions at the optic chiasm are missing crescents on both sides. Previous visual field expansion devices for AMV or BH required scanning into device and created a blind area (apical scotoma) of equal magnitude to the shifted view. A multiplexing prism can expand the visual field in both cases without limitations. Dr. Jung optimized the multiplexing prism design to maximize the expanded visual field and developed prototype glasses.

Active Confocal Imaging for Visual Prostheses

Dr. Jung and colleagues are developing and evaluating a novel front-end optical and video-processing system to be used with any visual prosthesis that will remove background clutter, and therefore, improve object detection and recognition, despite the prostheses’ limitations.

Current Research Funding

2013-2018
National Institutes of Health: Co-Investigator (PI: Eli Peli)
Visual field expansion through innovative multiplexing prism design
2016-2019 U.S. Department of Defense: Co-Principal Investigator
Active confocal imaging for visual prostheses

Publications

H-index

17 (Google Scholar, as of Sep 2017)

Selected Publications

Dr. Jung has published 29 journal papers and more than 40 peer-reviewed proceeding articles. Below is a list of selected publications. View his publications on PubMed, Google Scholar, or ORCID.

  1. Jung J-H, Kim J, Lee B. Solution of pseudoscopic problem in integral imaging for real-time processing. Optics Letters; 2013;38:76-78.
  2. Jung J-H, Peli E. Impact of high power and angle of incidence on prism corrections for visual field loss. Optical Engineering; 2014;53:061707-1-13.
  3. Kim J, Jung J-H, Jeong Y, Hong K, Lee B. Real-time integral imaging system for light field microscopy. Optics Express. 2014;22:10210–10220.
  4. Jung J-H, Aloni D, Yitzhaky Y, Peli E. Active confocal imaging for visual prostheses. Vision Research. 2015;111:182-196.
  5. Peli E, Jung J-H. Multiplexing prisms for field-of-view expansion. Optometry and Vision Science. 2017;94:817–829.

Patents

For a complete list of Dr. Jung’s patents, download his CV [PDF].

Motion Parallax in Object Recognition
Peli E, Jung J-H, Qiu C. US Provisional Patent Application, filed Mar. 30, 2017.

Active Confocal Imaging Systems and Methods for Visual Prostheses
Peli E, Jung J-H.  US Patent Application, WO2015143203 A1, Sep 24, 2015.

Two-Dimensional/Three-Dimensional Convertible Display Device Using Surface Light Source Array
Lee B, Kim Y, Jung J-H. Korean Patent, 10-0918670, Sep 22, 2009.