Subretinal implantable artificial photoreceptor

Author

Weihua, Pei ; Hongda, Chen ; Jun, Tang ; Lin, Lu ; Jinbin, Liu ; Xiaohong, Sui ; Huijuan, Wu ; Xiaofeng, Hu ; Jinghua, Chen ; Xiaoxin, Li ; Kai, Li

Author_Institution

State Key Lab. on Integrated Optoelectronics, Chinese Acad. of Sci., Beijing, China

fYear

2005

fDate

26-28 May 2005

Firstpage

25

Lastpage

27

Abstract

The present study reports a subretinal implant device which can imitate the function of photoreceptor cells. Photodiode (PD) arrays on the chip translate the incident light into current according to the intensity of light. With an electrode at the end of every photodiode, the PDs transfer the current to the remnant healthy visual cells such as bipolar cells and horizontal cells and then activate these cells. Biocompatible character of the materials and artificial photoreceptor itself were tested and the photoelectric characteristics of the chips in simulative condition were described and discussed.

Keywords

bioelectric phenomena; cellular biophysics; eye; neurophysiology; photodetectors; photodiodes; prosthetics; bipolar cells; horizontal cells; photodiode arrays; photoreceptor cells; subretinal implant device; subretinal implantable artificial photoreceptor; Biological materials; Biomedical optical imaging; Electrodes; Implants; Neurons; Optical sensors; Photodiodes; Photoreceptors; Retina; Silicon;

fLanguage

English

Publisher

ieee

Conference_Titel

Neural Interface and Control, 2005. Proceedings. 2005 First International Conference on

Print_ISBN

0-7803-8902-6

Type

conf

DOI

10.1109/ICNIC.2005.1499834

Filename

1499834