Cancerous tumor in the eye, eye socket, or surrounding structures.
The type of treatment you received is central to how VA rates this condition, so treatment records are critical. Oncology records, surgical operative reports, radiation therapy records, and chemotherapy administration records can show whether your treatment met the threshold of systemic chemotherapy, X-ray therapy more extensive than to the area of the eye, or surgery more extensive than enucleation.
If your cancer did not require that level of treatment, or after the 100% rating period ends and VA evaluates residuals, two separate lines of evidence matter. For visual impairment, eye examination findings that document your current level of vision in the affected eye are relevant. For nonvisual impairment such as disfigurement, photographs and clinical descriptions of the affected area can document what remains after treatment.
Statements from you or people who know you describing how your remaining symptoms affect your ability to work and carry out daily activities can help show the functional impact of any residuals after treatment ends.
Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.