Ray Flynn, 80, has dry age-related macular degeneration which has led to the total loss of his central vision.
He is using a retinal implant which converts video images from a miniature video camera worn on his glasses.
He can now make out the direction of white lines on a computer screen using the retinal implant.
Mr Flynn said he was "delighted" with the implant and hoped in time it would improve his vision sufficiently to help him with day-to-day tasks like gardening and shopping.
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