What are signs / symptoms we should expect as death approaches due to terminal cancer (lymphoma) what does fuzzy sight n burning feeling in face mean?

Seems like cns: Depending on where in the body the lymphoma is located and affectingly things can occur. If the bone marrow is affected then blood counts and immune system will suffer. If brain or spine are affected headaches, vision issues, fatigue can all occur. If other organs r involved like liver or lungs then digestion or breathing can be issue. Mostly extreme fatigue, infection, organ failure are at end.