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  • Title: Indocyanine green angiography in age-related macular degeneration with occult neovascularization.
    Author: Pece A, Introini U, Bolognesi G, Brancato R.
    Journal: Ophthalmologica; 1998; 212(5):295-300. PubMed ID: 9693284.
    Abstract:
    This study has been conducted to assess the sensitivity of indocyanine green angiography (ICGA) in detecting choroidal neovascularization (CNV) in patients with age-related macular degeneration (ARMD) with occult CNV at fluorescein angiography (FA) and to establish their eligibility for laser photocoagulation. Three hundred eighty-three eyes of 355 consecutive patients with occult CNV at FA were studied by ICGA; occult CNV with or without pigment epithelial detachment (PED) were detected as well. Eligibility for laser treatment was established on the basis of the ICGA-guided CNV extension and localization. Out of 157 eyes (41%) with occult CNV and PED, 74 (47.1%) showed focal ICGA CNV, 35 eyes (22.3%) had plaque CNV. Thirty-five eyes with PED (22.3%) appeared serous without CNV, and in 13 eyes (8.3%) no CNV was detectable because of large hemorrhages. Out of the 226 eyes (59%) presenting occult CNV without PED, 94 eyes (41.6%) had plaque CNV, and 58 (25.7%) had focal CNV. In 74 eyes (32.7%), there was no detectable CNV or only an ill-defined ICGA appearance. ARMD with PED is closely associated with focal CNV, while plaque CNV is largely found in exudative ARMD without PED (p < 0.001). Considering all the cases examined by ICGA, CNV was evident in 261 eyes (68%) occult at FA. Extrafoveal CNV laser treatment was recommended for 103 eyes (27%). Our results suggest that ICGA may be useful in the diagnosis and management of ARMD with occult CNV at FA increasing the number of patients eligible for laser treatment.
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