نتایج جستجو برای: retinal prosthesis

تعداد نتایج: 108874  

2014
Aachal Kotecha Joe Zhong David Stewart Lyndon da Cruz

BACKGROUND To evaluate the reach-to-grasp performance of patients fitted with an epiretinal artifical retina device. METHODS This was a hospital-based case series consisting of six patients fitted with the Argus II (Second Sight Medical Products Inc, California, USA) retinal prosthesis. Participants were asked to reach out and pick up a high-contrast cuboid object with the prosthesis in the '...

پایان نامه :دانشگاه آزاد اسلامی واحد علوم پزشکی تهران - دانشکده پزشکی 1390

هدف: در این مطالعه به بررسی الکترورتینوگرام در افراد مبتلا به retinal hemorrhage در کلینیک قدس طی بهمن 88 الی بهمن 89 پرداختیم. روش مطالعه: این مطالعه به صورت یک بررسی مشاهده ای (observational) توصیفی - تحلیلی (descriptive-analytical) مقطعی (cross-sectional) انجام شده است. حجم نمونه مورد بررسی در این مطالعه شامل دو گروه 25 نفری بود که یک گروه مبتلا به retinal hemorrhage بودند؛ ولی یک گروه نه ت...

2006
Kareem A. Zaghloul Kwabena Boahen

One goal of understanding neural systems is to develop prosthetic devices that can someday be used to replace lesioned neural tissue. For such a prosthesis to be practical, the device must perform these computations as efficiently as, and at a physical scale comparable to, the lesioned network, and should adapt its properties over time, independent of external control. Our approach to designing...

2016
Duane R Geruschat Thomas P Richards Aries Arditi Lyndon da Cruz Gislin Dagnelie Jessy D Dorn Jacque L Duncan Allen C Ho Lisa C Olmos de Koo José‐Alain Sahel Paulo E Stanga Gabriele Thumann Vizhong Wang Robert J Greenberg

OBJECTIVE The purpose of this analysis was to compare observer-rated tasks in patients implanted with the Argus II Retinal Prosthesis System, when the device is ON versus OFF. METHODS The Functional Low-Vision Observer Rated Assessment (FLORA) instrument was administered to 26 blind patients implanted with the Argus II Retinal Prosthesis System at a mean follow-up of 36 months. FLORA is a mul...

2010
Douglas B. Shire Patrick Doyle Shawn K. Kelly Marcus D. Gingerich Jinghua Chen Stuart F. Cogan William A. Drohan Oscar Mendoza Luke Theogarajan John L. Wyatt Joseph F. Rizzo

This presentation concerns the engineering development of the Boston visual prosthesis for restoring useful vision to patients blind with degenerative retinal disease. A miniaturized, hermetically-encased, 15-channel wirelessly-operated retinal prosthetic was developed for implantation and pre-clinical studies in Yucatan mini-pig animal models. The prosthesis conforms to the eye and drives a mi...

Journal: :Investigative Opthalmology & Visual Science 2005

2005
Shruthi Soora

SOORA, SHRUTHI. A Comparison of Two and Three Dimensional Wire Antennas for Biomedical Applications. (Under the direction of Prof. Gianluca Lazzi.) Miniature antennas are necessary to reduce the size of communications and biomedical devices, specifically for a retinal prosthesis. A comparison of two dimensional and three dimensional antennas are presented as an attempt to miniaturize and reduce...

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