Retina Surgery Global Perspectives

APRIL 2009 I RETINA TODAY I 33 P olypoidal choroidal vasculopathy (PCV) is a disease entity initially described by Yannuzzi et al1 in 1990. The prevalence of PCV among patients with age-related macular degeneration (AMD) is estimated to be 30% to 50% in Asian people. PCV consists of an abnormal vascular network with polypoidal lesions at its termini under the retinal pigment epithelium (RPE). CL A SSIFICATION OF PCV PCV can be classified into three types. The first type is the most common and involves choroidal vasculature abnormalities in the narrow sense. Vessels of the network show focal dilatation, constriction, and tortuosity, and the number of vessels is small. The second type is polypoidal choroidal neovascularization (CNV). Many vessels Treatment of Polypoidal Choroidal Vasculopathy Involving the Fovea