Method and apparatus for optogenetic treatment of blindness including retinitis pigmentosa
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United States of America Patent
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Jul 28, 2015
Grant Date -
Oct 21, 2010
app pub date -
Apr 14, 2010
filing date -
Apr 17, 2009
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Abstract
An apparatus for in vivo electroporating a plasmid into a retina of any eye includes a first electrode with a first polarity of voltage placed in contact with a cornea of the eye, a second electrode with an opposite second voltage at least in part behind the retina, and a pulsed voltage source for providing a pulsed DC voltage with an optimized field strength amplitude, frequency, number of pulses, group repetition rate and duration of pulse and group repetition, which are optimized for transfection of the channelrhodospsin-2 (ChR2) gene into the retinal ganglion cells. An in vivo method for treating retinal ganglion cells in an eye without use of viral transfection includes the steps of nonviral in vivo delivering a channelrhodospsin-2 (ChR2) gene to target the specific (retinal ganglion) cells of a retina by intravitreous injection of plasmid DNA, electroporating the plasmid into the retina and use of image intensification device for stimulating the retinal ganglion cells with ambient lighting conditions.
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