The most common type of intraocular tumor in adults is a type of eye cancer known as choroidal melanoma. It affects the choroid, which is the layer of tissue that lies between the retina and the sclera. Choroidal melanoma can lead to retinal detachment or even spread to other parts of the body, especially if left untreated. Tumors are typically diagnosed and observed through a dilated eye examination. Various treatment options are available for intraocular tumors and will largely depend on the size and location of the tumor itself.
You can learn more about intraocular tumors from the ASRS here.