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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Selective occlusion of subfoveal choroidal neovascularization in angioid streaks by using a new technique of ingrowth site treatment.

PURPOSE: To evaluate the visual and angiographic effects, as well as optical coherence tomography (OCT) findings, after a new treatment-neovascular ingrowth-site photothrombosis-in patients with subfoveal choroidal neovascularization (CNV) secondary to angioid streaks. DESIGN: Prospective noncomparative small case series. PARTICIPANTS: Five eyes of 5 patients with angioid streaks in whom fluorescein and conventional indocyanine green (ICG) angiography clearly demonstrated distinct CNV vessels supplying the subfoveal neovascular complex. INTERVENTION: All five eyes were submitted to ICG-mediated photothrombosis of the neovascular ingrowth site. This novel, laser/dye-mediated technique uses large-spot, lower-intensity 810-nm light for continuous application of laser energy to ICG concentrated in vascular lesions. MAIN OUTCOME MEASURES: Visual outcome and the results of fluorescein angiography, ICG angiography, and OCT evaluation. RESULTS: Fluorescein and conventional ICG angiography were sufficient to identify the CNV ingrowth site, which was juxtafoveal in 2 and extrafoveal in 3 of the 5 eyes in this series. Obliteration of the entire neovascular lesion was achieved in all patients within the first hour after ICG-mediated photothrombosis of the CNV ingrowth site. At 1 week, the mean change in best-corrected visual acuity from baseline was +3.2 (+/-1.4) lines. Twelve months after treatment, visual acuity improved by 3 or more lines in all patients, and decreased leakage of fluorescein from the CNV, as well as OCT evidence of reduced or resolved retinal edema, was seen at the last follow-up visit. Major complications, such as immediate severe visual loss and retinal vessel occlusion in the early posttreatment period, were not identified in the 5 patients submitted to the procedure. CONCLUSIONS: Photothrombosis of the CNV ingrowth site by using lower-intensity light to direct laser energy continuously after IV ICG infusion is a safe and effective technique for rapid induction of CNV hypoperfusion in selected patients and is associated with considerable improvement in visual acuity and partial restoration of the retinal architecture up to 12 months after treatment.[1]


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