Preliminary 6 month results from the Argus II epiretinal prosthesis feasibility study.
The Argus II 60 channel epiretinal prosthesis has been developed in order to provide partial restoration of vision to subjects blinded from outer retinal degenerative disease. To date the device has been implanted in 21 subjects as part of a feasibility study. In 6 month post-implantation door finding and line tracking orientation and mobility testing, subjects have shown improvements of 86% and 73%, respectively, for system on vs. system off. In high-contrast Square Localization tests using a touch screen monitor 87% of tested subjects performed significantly better with the system on compared with off. These preliminary results show that the Argus II system provides some functional vision to blind subjects.
Humayun
Mark S
MS
Doheny Eye Insitutute, Los Angeles, CA 90017, USA. humayun@usc.edu
Dorn
Jessy D
JD
Ahuja
Ashish K
AK
Caspi
Avi
A
Filley
Eugene
E
Dagnelie
Gislin
G
Salzmann
Joël
J
Santos
Arturo
A
Duncan
Jacque
J
daCruz
Lyndon
L
Mohand-Said
Saddek
S
Eliott
Dean
D
McMahon
Matthew J
MJ
Greenberg
Robert J
RJ
D000328:Adult; D000368:Aged; D001766:Blindness / Q000601:surgery*; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008124:Locomotion / Q000502:physiology; D008297:Male; D008875:Middle Aged; D009949:Orientation / Q000502:physiology; D019736:Prostheses and Implants; D012160:Retina / Q000601:surgery*; D012174:Retinitis Pigmentosa / Q000601:surgery