Results 11 to 20 of about 14,685 (216)
Micro/Nano Technologies for High-Density Retinal Implant [PDF]
Micromachines, 2019 During the past decades, there have been leaps in the development of micro/nano retinal implant technologies, which is one of the emerging applications in neural interfaces to restore vision. However, higher feedthroughs within a limited space are needed
Tianzhun Wu, Qi Zeng, Saisai Zhao
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Chronic electrical stimulation with a peripheral suprachoroidal retinal implant: a preclinical safety study of neuroprotective stimulation [PDF]
Frontiers in Cell and Developmental BiologyPurposeExtraocular electrical stimulation is known to provide neuroprotection for retinal cells in retinal and optic nerve diseases. Currently, the treatment approach requires patients to set up extraocular electrodes and stimulate potentially weekly due
Carla J. Abbott +21 more
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Effects on Retinal Stimulation of the Geometry and the Insertion Location of Penetrating Electrodes
IEEE Transactions on Neural Systems and Rehabilitation Engineering, 2023 Retinal implants have been developed and implanted to restore vision from outer retinal degeneration, but their performance is still limited due to the poor spatial resolution.
Yunseo Son +4 more
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Electrical imaging of axonal stimulation in the retina
Current Directions in Biomedical Engineering, 2022 Stimulation of axons or its avoidance plays a central role for neuroprosthetics and neural-interfaces research. One peculiar example constitutes retinal implants.
Corna Andrea +3 more
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Türk Oftalmoloji Dergisi, 2023 This study presents the long-term clinical results of Argus II retinal prosthesis implantation in eyes with light perception and projection in 3 patients with end-stage retinitis pigmentosa.
Dilek Güven +3 more
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Mediating Retinal Ganglion Cell Spike Rates Using High-Frequency Electrical Stimulation
Frontiers in Neuroscience, 2019 Recent retinal studies have directed more attention to sophisticated stimulation strategies based on high-frequency (>1.0 kHz) electrical stimulation (HFS). In these studies, each retinal ganglion cell (RGC) type demonstrated a characteristic stimulus-
Tianruo Guo +13 more
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Fabrication of Subretinal 3D Microelectrodes with Hexagonal Arrangement
Micromachines, 2020 This study presents the fabrication of three-dimensional (3D) microelectrodes for subretinal stimulation, to accommodate adjacent return electrodes surrounding a stimulating electrode. For retinal prosthetic devices, the arrangement of return electrodes,
Hee Won Seo, Namju Kim, Sohee Kim
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Avoidance of axonal activation in epiretinal implants using short biphasic pulses
Current Directions in Biomedical Engineering, 2022 Retinal implants allow patients suffering from degenerative retinal diseases to regain visual percepts. Despite considerable effort in developing and improving retinal neuroprostheses in the last decades, the restored vision in patients does not achieve ...
Werginz Paul +2 more
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Artificial vision: advances, topical issues, and prospects
Российский офтальмологический журнал, 2018 The review presents modern technologies of vision restoration, with special emphasis to retinal prosthetics: Argus, Alpha IMS, Intelligent Medical Implant, Artificial Silicon Retina, Photovoltaic Retinal Prosthesis, Epi-Ret, Boston Retina Implant Project,
V. V. Neroev +9 more
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Therapeutic Advances in Ophthalmology, 2019 Introduction: Macular edema after central retinal vein occlusion is a common cause of vision loss. Upregulation of vascular endothelial growth factor and higher levels of inflammatory mediators have been involved in the pathogeny of the macular edema in ...
João Coelho +2 more
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