Comparison of electrically-evoked ganglion cell responses in normal and degenerate retina.

Abstract

Retinal prosthesis is regarded as a promising method for restoring vision for the blind with retinal diseases such as retinitis pigmentosa (RP) and age related macular degeneration (ARMD). Among the several prerequisites for retinal prosthesis to succeed, one of the most important factors is the optimization of electrical stimulation applied through the prosthesis. From the previous study, we showed that the electrical characteristics of diseased retina are different from those of normal retina. For the next step, we compared electrically evoked response properties of retinal ganglion cells and established the thresholds for charge density in normal and rd1 mouse using multi-electrode array (MEA). The threshold for charge density was higher in rd1 mouse. The mean values were 254.78 microC/cm(2) and 424.62 microC/cm(2) in normal and rd1 mouse, respectively.

• Authors: Jang Hee Ye, Kyung Hwan Kim, Yong Sook Goo
• Journal: Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference (Annu Int Conf IEEE Eng Med Biol Soc) Vol. 2008 Pg. 2465-8 ( 2008) ISSN: 2375-7477 [Print] United States
• PMID: 19163202 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Topics

• Animals
• Computer Simulation
• Electric Stimulation (methods)
• Electrochemistry (methods)
• Electrodes
• Evoked Potentials, Visual
• Macular Degeneration (diagnosis, pathology)
• Mice
• Mice, Inbred C3H
• Mice, Inbred C57BL
• Retina (physiology)
• Retinal Ganglion Cells (metabolism)
• Retinitis Pigmentosa (diagnosis, pathology)
• Sensory Thresholds
• Time Factors