Would Xanax or macular degeneration cause my mother to see things that aren't there?

A fellow caregiver asked...

First of all my Mom has macular degenetive disease of the eye. She still sees not totaly blind.She was having very angry moments sometimes getting upset for what seemed no reason. I told her Doctor and he put her on Xanax low dose 2 at bed time and she is fine all day. Now she is telling me when she looks out my kitchen every morning she sees Angels in the same spot every day! She is very worried about this. She now lives with husband & I. My Dad died last June.