
A new biologic, ranibizumab (Lucentis, Genentech), has just been cleared for age-related macular degeneration (AMD). A study of Medicare patients 65 years of age and older found that AMD increased substantially-from 5% to 27%-between 1991 and 1999. The American Academy of Ophthalmology estimates that more than 1.75 million Americans have AMD, with seven million more having earlier stages of the disease.
