This thesis evaluates the role of MRI in diagnosing and characterizing uveal melanoma and orbital disease. It analyzes imaging phenotypes of ocular tumors and compares MRI findings with clinical and histopathological reference standards. The results show that high-resolution MRI improves tumor delineation, tissue characterization, and differential diagnosis across orbital pathologies. The work supports integration of MRI into ocular oncology and orbital workflows to strengthen treatment planning and clinical decision-making.