medical journal says avastin is just as effective at tackling wet age-related macular degeneration -lrb- amd -rrb- as the current treatment , lucentis that drug company novartis has been accused of trying to block trials aimed at promoting a ` cheap , safe and effective ' treatment for sight loss on the nhs .
it has ` bullied ' experts who have tried to block undermine and divert attention ' from trials to prove avastin works .