What is retinoblastoma?

Retinoblastoma is defined as a cancerous tumor of the retina, primarily affecting young children. This tumor originates in the immature retinal cells and can lead to symptoms such as leukocoria (white reflection from the pupil), strabismus (crossed eyes), and vision problems. Early detection and treatment are crucial, as retinoblastoma can spread beyond the eye if not properly managed.

The other options do not accurately describe retinoblastoma. A type of eye allergy refers to conditions caused by allergic reactions affecting the eye, not a tumor. A degenerative condition affecting color vision typically relates to genetic disorders affecting how the eye perceives color, rather than to a cancerous growth. Conditions emerging from high blood sugar levels, like diabetic retinopathy, involve complications of diabetes affecting the retina but are separate from retinoblastoma, which is a primary malignant tumor.