My mother is 94 and has macular degeneration as well as hallucinations. Sometimes they are good ones, but there are also bad ones that keep her up all night. I was told to take her to a psychiatrist, but am having problems finding one on her insurance plan and that works with the Elderly.
You will find both good and bad doctors in basically every field. I wish you well.
I would also discuss with her primary physician. They can do some evaluation and referral. They can review her meds to see if they are causing it or check her for a urinary tract infection that could cause strange dreams.
Are there any teaching hospitals near you?
Go online to your mom's health insurance company's site and look for In-network providers or call and ask the ins. co.
Also, most hospitals have a psychiatrist that is affiliated with them. Call around to get their names.
You might also see if a neurologist might help. My cousin saw one when her dementia rapidly progressed.
I wanted to see a geriatric psychiatrist myself but could not find one who accepted Medicare. I understand how hard that is! But start from a geriatrician and take referrals from there.