Abstract
For 5 years, patients and clinicians have wrestled with the choice between two drugs for the treatment of neovascular age-related macular degeneration (AMD), a common cause of irreversible blindness among the elderly worldwide. Vision loss results from the abnormal growth and leakage of blood vessels in the macula, a specialized portion of the retina responsible for the best visual acuity. Without this macular vision, patients become legally blind. Vascular endothelial growth factor (VEGF), the cytokine primarily responsible for blood-vessel growth, is inhibited when anti-VEGF drugs are injected repeatedly into the eye, and blindness is prevented in most patients. The majority . . .
