Use of the Argus II retinal prosthesis to improve visual guidance of fine hand movements.

ABSTRACT:

Purpose

We studied the capabilities of the Argus II retinal prosthesis for guiding fine hand movement, and demonstrated and quantified guidance improvement when using the device over when not using the device for progressively less predictable trajectories.

Methods

A total of 21 patients with retinitis pigmentosa (RP), remaining vision no more than bare light perception, and an implanted Argus II epiretinal prostheses used a touchscreen to trace white paths on black backgrounds. Sets of paths were divided into three categories: right-angle/single-turn, mixed-angle/single-turn, and mixed-angle/two-turn. Subjects trained on paths by using prosthetic vision and auditory feedback, and then were tested without auditory feedback, with and without prosthetic vision. Custom software

SUBMITTER: Barry MP 

PROVIDER: S-EPMC3416020 | biostudies-literature | 2012 Aug

REPOSITORIES: biostudies-literature