Results 71 to 80 of about 272,086 (189)

The Workings of the Retinal Prosthesis

, 2013
This video, created by Support Center for Microsystems Education (SCME), describes a biomedical application of MEMS technology. This 5:08 minute long video describes "how a microsystems array is used in the retinal prosthesis to stimulate cells ...

core   +2 more sources

Use of cortical electrodes in solving visual prosthesis problems

Анналы клинической и экспериментальной неврологии, 2017
There are two main approaches to visual function prosthesis in blindpatients with the use of brain-computer interfaces on the basisof either retinal or cortical stimulation by implanted electrodes. Themost complex in visual prosthesis is creation of the
B. Kh. Baziyan, M. E. Ivanova, S. A. Gordeev, V. V. Ortmann   +3 more
doaj   +1 more source

Four‐dimensional immuno‐mechanobiomaterials: Dynamic material cues that program host response to prevent fibrosis and enable regeneration

VIEW, EarlyView.
Dynamic immuno‐mechanobiomaterials with time‐programmed mechanical adaptation orchestrate host responses through precise mechanotransduction and immune‐stromal regulation. These adaptive biomaterials minimize mechanical mismatch, attenuate the forign dy response and fibrosis, promote angiogenesis and controlled extracellular matrix remodeling, and ...
Gobinath Vellapalayam Manoharan, Kathirvel Ayyaswamy, Parthasarathy Vellaichamy, Nagarajan Deivanayagam Pillai, Rithik Gobinath   +4 more
wiley   +1 more source

Retinal Prosthesis in the Treatment of Retinitis Pigmentosa

Güncel Retina Dergisi (Current Retina Journal), 2021
Retinal prostheses are devices that receive an environmental visual stimulus, process it, and stimulate the degenerated retinal areas in order to produce a functionally efficient visual perception. Indications for implantation of these devices include hereditary retinal degenerations like retinitis pigmentosa, choroideremia, rod-cone dystrophy, and ...
openaire   +1 more source

Neovascular glaucoma at a tertiary Centre in Finland, 2008–2024: A retrospective cohort study

Acta Ophthalmologica, EarlyView.
Abstract Purpose Neovascular glaucoma (NVG) is a refractory secondary glaucoma, yet longitudinal outcome data remain limited. This study reports its aetiologies, treatments and outcomes. Methods Patients with NVG were identified through electronic medical record review.
Gilbert Simons, Mikael von Fersen, Paula Summanen, Mika Harju   +3 more
wiley   +1 more source

Predictors of visual acuity, intraocular pressure and pain in neovascular glaucoma

Acta Ophthalmologica, EarlyView.
Abstract Purpose To identify factors associated with best‐corrected visual acuity (BCVA), intraocular pressure (IOP) and ocular pain in neovascular glaucoma (NVG). Methods The retrospective cohort included all patients diagnosed with NVG during 2008–2024 at Helsinki University Hospital, Finland. Linear mixed‐effects models used pre‐specified covariates,
Gilbert Simons, Mikael von Fersen, Alexandra Dahlberg, Ville Vartiainen, Paula Summanen, Mika Harju   +5 more
wiley   +1 more source

D‐amino acid oxidase as a chemogenetic tool for spatiotemporally controlled hydrogen peroxide production: The oxygen connection

British Journal of Pharmacology, EarlyView.
Abstract Background and Purpose D‐amino acid oxidase (DAO) has been developed as a chemogenetic tool, to precisely manipulate redox levels in tissues and cells by generating H2O2 in the presence of D‐amino acids. The enzyme's significant oxygen consumption during H2O2 production may influence cellular oxygen levels.
Wiebke Maurer, Anke Zieseniss, Vamsi Priya Vikram, Yamin Chen, Laura Bauer, Annette Hillemann, Peter Rehling, Maithily S. Nanadikar, Diane de Zélicourt, Vartan Kurtcuoglu, Dörthe M. Katschinski   +10 more
wiley   +1 more source

Argus II retinal prosthesis malrotation and repositioning with intraoperative optical coherence tomography in a posterior staphyloma

, 2015
Michael I Seider, Paul Hahn Duke University Eye Center, Durham, NC, USA Introduction: The Argus II retinal prosthesis may improve visual function in patients with severe vision loss from retinitis pigmentosa.
Hahn P, Seider MI
core  

A Stimulus-Scattering-Free Pixel-Sharing Sub-Retinal Prosthesis SoC with 35.8 dB Dynamic Range Time-Based Photodiode Sensing and Per-Pixel Dynamic Voltage Scaling

, 2023
Retinal prosthesis (RP) systems-on-chip (SoC) for the treatment of age-related macular degeneration (AMD) and retinal pigment degeneration have been widely studied for restoring visual function.
Cha, Seongkwang, Goo, Yong Sook, Park, Minju, Kim, Sohee, Kim, Seong-Woo, Eom, Kyeongho, Kim, Namju, Lee, Hyung-Min, Lee, Han-Sol, Ku, Seung-Beom, Namju Kim, Minju Park, Hyung-Min Lee, Sohee Kim, Kyeongho Eom, Yong Sook Goo, Seong-Woo Kim, Han-Sol Lee, Seongkwann Cha, Seung-Beom Ku   +19 more
core   +1 more source

Electrical Characterization of 3D Au Microelectrodes for Use in Retinal Prostheses

Sensors, 2015
In order to provide high-quality visual information to patients who have implanted retinal prosthetic devices, the number of microelectrodes should be large.
Sangmin Lee, Jae Hyun Ahn, Jong-Mo Seo, Hum Chung, Dong-Il Cho   +4 more
doaj   +1 more source