alexa Photodynamic therapy with indocyanine green for occult subfoveal choroidal neovascularization caused by age-related macular degeneration.
Chemical Engineering

Chemical Engineering

Journal of Analytical & Bioanalytical Techniques

Author(s): Costa RA, Farah ME, Cardillo JA, Belfort R Jr

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Abstract PURPOSE: To report two cases of occult subfoveal choroidal neovascularization (CNV) due to age-related macular degeneration (AMD) that were successfully treated utilizing large spot, low irradiance 810-nm light and intravenous injection of small-volume, high-concentration indocyanine green (ICG) bolus, termed ICG-mediated photodynamic therapy (i-PDT). METHODS: Case report. Two patients with occult subfoveal CNV (two eyes) due to AMD were treated with i-PDT and were prospectively followed with fluorescein and indocyanine green angiography as well as optical coherence tomography (OCT). RESULTS: Both patients presented a 3-line increase in visual acuity by twelve months of follow-up. A significant regression of the CNV was demonstrated by fluorescein angiography within one week following treatment. OCT revealed diminishing of the subretinal fluid. There were no complications related to the procedure. CONCLUSION: i-PDT induced CNV regression and improved the visual acuity in these particular cases, suggesting a new and promising way to treat neovascular AMD. The partial anatomical restoration associated to the improvement of the visual function observed in both patients suggests that a selective therapeutic effect was achieved. Further studies are required not only to assess the clinical value of this treatment but also to better understand the major mechanism of action involving this novel treatment modality.
This article was published in Curr Eye Res and referenced in Journal of Analytical & Bioanalytical Techniques

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