Retinoblastoma is a tumor in the eye that mainly affects children below 5 years of age. It may also develop in fetuses in the womb, as well as in newborns, babies and toddlers. Retinoblastoma is rare malignant eye tumor. It starts in the retina of the eye.
Eye Cancer is a rare disease. It generally spreads to the eye from another organ like skin or lymph nodes and is known as secondary eye cancer, which is more common than the primary eye cancer. A primary eye cancer is the one that originally starts from the eye.
Tumors in the eye are generally secondary tumors caused by cancers that have spread from other parts of the body, such as the breast cancer, lung cancer, prostate cancer, bowel cancer etc. There are two types of primary cancers that develop within the eye - retinoblastoma in children and melanoma in adults.
In children, retinoblastoma can occur in one or both of eyes. When the condition occurs in only one eye, it is called unilateral retinoblastoma. The term unilateral stands for one side. When the eye cancer is present in both the eyes, the condition is called bilateral retinoblastoma. The term bilateral stands for both sides.