This Phase I/II safety study is designed to investigate the safety and efficacy of ranibizumab (Lucentis) in the treatment of polypoidal choroidal vasculopathy (PCV), a potentially blinding eye disease that involves the growth of tiny, abnormal blood vessels under the retina. These abnormal blood vessels can bleed or leak fluid, causing disruption of normal retinal function and vision loss. Ranibizumab is a drug that is FDA-approved for the treatment of wet age-related macular degeneration (AMD) and is injected directly into the eye. Given the efficacy of ranibizumab in the treatment of wet AMD, and the postulated similarity between the disease mechanisms involved in both wet AMD and PCV, we believe ranibizumab will have a beneficial effect on visual function in patients with PCV.