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What arrangements have been put in place for blind sports fans at the 2012 Olympics?
BBC Radio 4
Can the NHS cope with demand for treatment for the UK's most common cause of blindness?
Peter White and Cheryl Gabriel meet Kenyan blind people during the trek for Comic Relief.
Should blind sports fans qualify for concessionary tickets to the Olympics in 2012?
Peter White on the stigma of blindness in Kenya and style advice for blind fashionistas.