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  • Title: Selective use of indocyanine green angiography for occult choroidal neovascularization.
    Author: Lim JI, Sternberg P, Capone A, Aaberg TM, Gilman JP.
    Journal: Am J Ophthalmol; 1995 Jul; 120(1):75-82. PubMed ID: 7541939.
    Abstract:
    PURPOSE: Indocyanine green angiography is useful in situations where fluorescein angiography shows occult choroidal neovascularization or pigment epithelial detachment. We sought to determine how often the selective application of indocyanine green angiography results in useful information for eyes with occult choroidal neovascularization. METHODS: We reviewed 153 consecutive indocyanine green angiograms and identified 77 in which corresponding fluorescein angiograms showed occult choroidal neovascularization or pigment epithelial detachment. We examined the indocyanine green angiograms to detect areas of hyperfluorescence and to classify the margins of hyperfluorescence as well demarcated or poorly demarcated. RESULTS: Of 77 eyes, 42 (55%) eyes had occult choroidal neovascularization by fluorescein angiography, seven (9%) eyes had both classic and occult choroidal neovascularization by fluorescein angiography, and 28 (36%) eyes had pigment epithelial detachments. Of 42 eyes with occult choroidal neovascularization by fluorescein angiography, 21 (50%) had well-demarcated margins, 13 (31%) had poorly demarcated margins, and eight (19%) had no detectable hyperfluorescence by indocyanine green angiography. Of seven eyes with both classic and occult choroidal neovascularization by fluorescein angiography, two had both poorly demarcated and well-demarcated borders, two had only poorly demarcated borders, and three had well-demarcated borders by indocyanine green. The indocyanine green angiogram showed 23 (82%) of 28 pigment epithelial detachments to have well-demarcated borders of hyperfluorescence; 13 (57%) of 23 were treated. CONCLUSION: Indocyanine green angiography adds clinically useful information to fluorescein angiography by demonstrating well-demarcated areas of hyperfluorescence in 50% of eyes selected because of diagnosis of occult choroidal neovascularization and in 82% of eyes selected because of pigment epithelial detachment.
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