Drug company accused of 'blocking' cheap eye treatment

A drugs firm has been accused of trying to block access to what some doctors believe is a cheap, safe and effective drug to treat a common eye condition.

The British Medical Journal claims it has revealed a campaign to derail research into the cancer drug Avastin.

The claim has been denied by Novartis, the firm which markets the officially licensed drug, Lucentis, in the UK.

Dominic Hughes reports.