Age-Related Macular Disease

excision. The TAP study (Treatment of AMD with PDT) involving 609 patients at 22 centres in the USA and Europe is a phase 3 clinical trial where patients with subfoveal CNV are randomized to visu-dyne or placebo. In this study a drug (a derivative of benzoporphyrin) was used to sensitize the neovascular tissue, following which the tissues were irradiated using a diode laser. The verteporfin in the Photo-dynamic Therapy Study (VIP study) uses a different photosensitizer but also includes many patients with subfoveal CNV who do not fit the criteria for the TAP study. The 12 month result of the TAP study ha