Ocular cancer refers to cancers that occur in the eye or surrounding structures. The most common type is melanoma, which develops in the cells that produce pigment. Other types include retinoblastoma, primarily affecting children, and lymphoma, which can occur in the eye's tissues. Symptoms may include vision changes, eye pain, or unusual growths. Diagnosis typically involves a comprehensive eye examination, imaging tests, and sometimes a biopsy. Treatment options vary based on the type and stage of cancer and may include surgery, radiation therapy, or chemotherapy. Early detection is crucial for improving outcomes.