Fergus Walsh explains what causes age-related macular degeneration
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What causes age-related macular degeneration?

It is the most common cause of sight loss in adults - age-related macular degeneration - and now doctors in London have performed a pioneering operation to try to cure it.

Patients with the condition lose their central vision, which becomes distorted and blurred.

The BBC's medical correspondent Fergus Walsh explains what causes it.

  • 29 Sep 2015
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