ICG videoangiography of occult choroidal neovascularization in age-related macular degeneration

Digital indocyanine green videoangiography has recently been reported to improve the imaging of occult choroidal neovascularization. In this study, 44 eyes with occult choroidal neovascularization in age-related macular degeneration were studied with fluorescein and indocyanine green videoangiography. On indocyanine green videoangiographic examination, 6 of the 44 eyes (13.6%) with occult choroidal neovascularization had vascularized pigment epithelial detachment and 27 (61.4%) had vascularized retinal pigment epithelium. In the remaining 11 (25%) eyes which had previous laser photocoagulation, indocyanine green videoangiography confirmed the presence of recurrence while fluorescein revealed no demonstrable neovascularization. The findings in our study indicate that patients with occult choroidal neovascularization have manifestations that are more clearly demonstrated with indocyanine green videoangiography and improved imaging of these abnormal vessels could potentially increase the number of patients eligible for photocoagulation treatment.