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For them, the long hours on the road and the homework assignments are a blessing.

“What’s it worth to see again? It’s worth everything,” Terri Pontz said.

The artificial retina procedure has been performed several-dozen times over the past few years in Europe, and the expectation is that it will find similar success in the U.S., where the University of Michigan is one of 12 centers accepting consultations for patients.

Candidates for the retinal prosthesis must be 25 or older with end-stage retinitis pigmentosa that has progressed to the point of having “bare light” or no light perception in both eyes.

Dr. Thiran Jayasundera, one of two physicians who performed the 4.5-hour surgery on Roger Pontz, is scheduled to discuss his experiences with the retinal prosthesis process during a meeting of the American Society of Cataract and Refractive Surgery on Friday in Boston. He calls it a “game-changer.”

Pontz agrees: “I can walk through the house with ease. If that’s all I get out of this, it’d be great.”

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Online:

http://www.kellogg.umich.edu

http://www.2-sight.com