Toward A High Visualacuity Retinal Prosthesis

• doi: 10.1109/Transducers.2013.6626872
• title: Toward a high visual-acuity retinal prosthesis
• publisher: IEEE
• isbn: 978-1-4673-5983-2
• issn: 2159-547X
• rank: 3878
• access_type: LOCKED
• content_type: Conferences
• abstract: We report retinal prosthesis devices with specifications needed to support a high visual acuity (VA) up to 20/168 and a large field of view (FOV). These devices use a flexible CMOS image sensor technology to integrate an array of “pixels”, each comprises of an electrode, photo sensor, signal processor and driver, into a single chip in a biocompatible and flexible format, and the total thickness including passivation layers is ~30 μm; these devices, having 4,096~16,384 pixels 30 μm in pitch, can be formed into a contact-lens-shaped surface conforming to the retina and minimizes the neuron-to-electrode distance needed to increase the resolution while decreasing the threshold power per pixel. We also integrated a selectable Laplacian-of-Gaussian circuit to imitate the lateral inhibition by horizontal cells to cone cells and the center-surround feature for subretinal implants.
• article_number: 6626872
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6626872
• html_url: https://ieeexplore.ieee.org/document/6626872/
• abstract_url: https://ieeexplore.ieee.org/document/6626872/
• publication_title: 2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII)
• conference_location: Barcelona, Spain
• conference_dates: 16-20 June 2013
• publication_number: 6599514
• is_number: 6626676
• publication_year: 2013
• publication_date: 16-20 June 2013
• start_page: 738
• end_page: 743
• citing_paper_count: 5
• citing_patent_count: 0
• download_count: 228
• insert_date: 20131010
• index_terms:
  • ieee_terms:
    • Retina
    • Electrodes
    • Prosthetics
    • Arrays
    • Implants
    • Neurons
    • CMOS integrated circuits
  • author_terms:
    • Retinal prosthesis
    • high visual acuity
    • flexible electronics
    • implantable electronics
    • spherical silicon chip
  • dynamic_index_terms:
    • Retinal Prosthesis
    • Visual Prostheses
    • Artificial Retina
    • Field Of View
    • Signal Processing
    • Photodetector
    • Image Sensor
    • Camera Sensor
    • Cone Photoreceptors
    • Cone Cells
    • Large Field Of View
    • Lateral Inhibition
    • Surround Suppression
    • Flexible Form
    • High Acuity
    • High Visual Acuity
    • Flexible Sensors
    • Flexible Technology
    • Flexible Engineering
    • Electrical Stimulation
    • Ganglion Cells
    • Retinal Pigment Epithelium
    • Retinal Ganglion Cells
    • Radius Of Curvature
    • Radii Of Curvature
    • Neural Function
    • New Zealand White
    • New Zealand White Rabbits
    • Spherical Surface
    • External Camera
    • Microelectrode Arrays
    • Multi-electrode Array
    • Microsaccades
    • Kynurenic Acid
    • Bipolar Cells
    • Small Electrodes
    • Gaussian Curvature
    • Electrode Array
    • Retinal Ganglion Cells Responses
    • Blinding Of Patients
• isbn_formats:
  • format: Electronic ISBN, value: 978-1-4673-5983-2, isbnType: New-2005
• authors:
  • Author Name: Long-Sheng Fan
    Affiliation: National Tsing Hua University, Hsinchu, Taiwan
    Author URL: https://ieeexplore.ieee.org/author/37401747200
    ID: 37401747200
    Order: 1
    Author Affiliations:
    • National Tsing Hua University, Hsinchu, Taiwan

Image Sensor

• sensor_type: CMOS
• resolution: 4,096~16,384 pixels
• dynamic_range: Not specified
• pixel_size: 30 μm
• dark_current: Not specified

Optical Data

• focal_length: Not specified
• aperture: Not specified
• field_of_view: 8~16 degrees
• distortion: Not specified

Performance Metrics

• power_consumption: 9 mW over 3x3 mm² area

Applications & Benefits

• cell_imaging: Used for characterizing responses in subretinal electrical stimulation experiments.
• benefits: Offers potential restoration of vision to blind patients by stimulating retinal neurons.

Supporting Organizations

• supported_by: National Tsing Hua University, NTHU fund, IMTC grants, LH Foundation, MOEA for ITRI ISO 10993 study

Manuscript Details

• publication_date: 16-20 June 2013

Relevancy Score

• score: 10

Processed JSON Filename

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