welcome to healthcaremagic,
from the description of the symptoms, it might be the tumor
is spreading to the eye causing the blurred vision
itself can cause the waving of the legs and feeling dizzy, the treatment being prescribed to him could also be causing the effect.
would suggest visit his specialist to rule out the spread of the tumor.
vibrania capsules have been given to replenish the vitamins
he might be losing due to the treatment
hoe tp have answered your query
wish your father a quick recovery.