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  • Title: Indocyanine green videoangiographic findings in detachment of the retinal pigment epithelium.
    Author: Yuzawa M, Kawamura A, Yamaguchi C, Shouda M, Shimoji M, Matsui M.
    Journal: Ophthalmology; 1995 Apr; 102(4):622-9. PubMed ID: 7536910.
    Abstract:
    BACKGROUND: Several forms of retinal pigment epithelial detachment have been reported. The authors used indocyanine green (ICG) videoangiography, which is useful to study the choroidal vasculature and Bruch membrane, to study pigment epithelial detachments. METHODS: Ninety-eight pigment epithelial detachments in 75 eyes were classified based on the appearance of choroidal neovascular membranes or late phase findings of ICG videoangiography done at the initial examination. The authors also followed the evolution of 51 such detachments not associated with choroidal neovascularization (CNV). RESULTS: Sixty-four pigment epithelial detachments without CNV were divided into five groups. Among eyes with pigment epithelial detachments that showed intense hyperfluorescence, all except one of the patients had both eyes involved and had several pigment epithelial detachments, sometimes with exudative retinal detachments. Weak hyperfluorescence was observed more often in younger patients. During follow-up of eyes with pigment epithelial detachments that showed irregular hypofluorescence, a neovascular membrane developed in one eye, microrips developed in four eyes and retinochoroidal folds in one eye. Most eyes that showed irregular hyperfluorescence developed atrophy of the retinal pigment epithelium. In 34 pigment epithelial detachments with CNV, either irregular hypofluorescence or absence of fluorescence was observed in areas that corresponded to the pigment epithelial detachment. CONCLUSION: The intense hyperfluorescence is thought to be due to the accumulation of protein-rich fluid within the pigment epithelial detachment. Most pigment epithelial detachments that showed weak fluorescence probably represent variants of central serous choroidopathy. Pigment epithelial detachments that showed irregular hypofluorescence or hyperfluorescence were associated with age-related macular degeneration, and the former was correlated closely with CNV. Close follow-up therefore is recommended for eyes with pigment epithelial detachments that show irregular hypofluorescence.
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