Abstract
Indocyanine (ICG) angiography is shown to be helpful in identifying choroidal new vessels when occult on fluorescein angiography1-5. Isolated occult choroidal neovascularization (CNV) or leakage of undetermined source (type II of the MPS classification) are not associated with serous haemorrhagic, or fibrovascular pigment epithelium detachment. On early phase ICG angiography, occult CNV may be converted into a well-defined net in about 40% of cases6,7. This conversion allows a good delination and definition of the limits of the neo vascular complex. This early net is more often identified using scanning laser ophthalmoscope technology while using infrared fundus cameras. The identification of isolated occult CNV is based on the visualization in the late phases of hyperfluorescent plaque with hyperfluorescence. The signification of this late staining plaque is still controversial.
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Soubrane, G., Coscas, G., Kuhn, D., Quaranta, M. (1998). Isolated occult choroidal neovascularization: comparison between early and late phases of ICG angiography. In: Coscas, G., Piccolino, F.C. (eds) Retinal Pigment Epithelium and Macular Diseases. Documenta Ophthalmologica Proceedings Series, vol 62. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5137-5_58
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