Retinal angiomatous proliferation (RAP): 75-year-old patient with a decrease in visual acuity and metamorphopsia in right eye. This RAP lesion is focally hyperfluorescent in this late-phase FA (left) and hypocyanescent in midphase ICGA (right). Note the feeding and draining retinal arteriole and venule ending at the lesion.

2023年8月25日 · Indocyanine green angiography is an important invasive imaging modality among many diagnostic imaging modalities used in retinochoroidal diseases. It helps to study the anatomy, physiology, and pathology of choroidal and retinal circulation. It has an important role in the diagnosis of various ocular pathologies.

2023年6月16日 · The interpretation of ICGA images and the role of indocyanine green (ICG) uptake by the retinal pigment epithelium (RPE) in late fundus fluorescence is debated. Experimental evidence suggests that ICG accumulates progressively in the RPE after intravenous injection of the dye or after direct contact in vitro, making it a potential marker of RPE ...

Indocyanine green (ICG) selectively stains the internal limiting membrane (ILM) of the retina, and helps to visualize and remove the membrane from the retina. Toxicity and damage to the retina has been reported in in vitro and in vivo studies, and …

2001年8月8日 · ICG, a tricarbocyanine dye, is injected intravenously and is imaged as it passes through ocular vessels. An excitation filter with a peak at 805 nm and a barrier filter with a transmission peak of 835 nm, corresponding to the maximum fluorescence emitted by the dye in whole blood, are required.

ICGA is an important component of multimodal imaging in the diagnosis and treatment of many degenerative, tumoral, and inflammatory diseases of the choroid and retina. This review presents the general characteristics of ICGA and a practical approach to its clinical use.

2022年3月21日 · We begin with a brief overview of retinal regions and layers, followed by early descriptions of drusen and aging eyes visualized with indocyanine green angiography (ICGA). We will summarize a model of drusen formation. The principles of ICGA labeling will be introduced.

Indocyanine green angiography (ICG angiography) is an advanced diagnostic imaging technique widely used in ophthalmology to evaluate blood flow in the retina and choroid—the vascular layers of the eye.

Indocyanine green angiography (ICG) supplements the FA findings, especially in patients with sub-RPE lesions, also known as “occult” CNVs. Increased hyperfluorescence is visible from new, disorganized choriocapillaris on early ICG.

2023年8月25日 · Indocyanine green angiography (ICGA) is used to image the choroidal circulation and its abnormalities. Even though fundus fluorescein angiography (FFA) is a good tool for imaging retinal circulation in great detail, its ability to image the choroidal circulation is limited by the poor transmission o …