Doctors in Manchester have begun a drug trial that could stop hundreds of thousands of people in the UK from going blind.
Patients will have regular injections into the eye of Avastin over the two years of the study. Early research with small numbers of volunteers suggests that Avastin is at least as effective as a similar, but more expensive treatment designed to treat wet AMD called Lucentis.
Researchers hope that if the treatment proves successful with larger numbers of patients, eye specialists will be given the go-ahead to prescribe Avastin routinely for patients with AMD on the NHS.