One thing may happen to your aunt that didn't happen to me, but may happen to thousands of others. Sight problems are common after
and many times do go away after
some time. If it gets worse or she is worried, see her doctor. In the mean time, tell her not to panic, many times these odd things happen and go away. Her brain is re-wiring itself around the dead spot in her brain and while that is going on, other weird things sometimes happen.