Nigel Farage says the UK Independence Party (UKIP) is "at war" with the Conservative Party and criticised David Cameron for failing to backtrack on his claim in 2006 that UKIP members were mostly "closet racists".
He also hit out at the Prime Minister for failing to deliver a referendum on the European Union.
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Glaucoma is the biggest cause of permanent blindness and affects 60 million people around the world - a tenth of whom are completely blind.
United Airlines has apologised for its initial response after a passenger was injured as he was forcibly removed from an overbooked flight.
It is said that the teenager attacked and raped the woman, in her forties, on April 19 near to a park in Kidbrooke, south-east London.