Intraocular tumors are usually diagnosed clinically. Fluorescein angiography (FA) and indocyanine green angiography (ICGA) are generally not needed to diagnose the majority of intraocular tumors. However, these diagnostic techniques are still widely used in the evaluation of retinal and choroidal tumors as ancillary tests. Fluorescein angiography provides visualization of retinal tumors, while ICGA reveals vascular patterns of the choroidal tumors. Among choroidal tumors, ICGA is particularly useful in establishing the diagnosis of choroidal hemangioma, both circumscribed and diffuse types. Indocyanine green angiography also plays an important role in differentiating neoplastic conditions from non-neoplastic lesions, including central serous chorioretinopathy and polypoidal choroidal vasculopathy. Composite image technology and wide-angle angiography systems have made it possible to see multiple or extensive areas of interest in one photograph, improving diagnostic accuracy. More recently, optical coherence tomography angiography (OCTA), a non-invasive, dye-less procedure that provides information concerning both the superficial and deep capillary plexuses as well as the choroidal vasculature, has been used in the evaluation of intraocular tumors.