Here is a story about a slightly older woman (younger than me) that had this happen to her, and was more than happy to discover the cause.
University of Kentucky physicians were similarly perplexed by a 67-year-old patient who was experiencing disquieting symptoms. Although she had no history of dementia or mental problems, she had been seeing things hovering around her all the time. Specifically, faces . . . terrifying, disembodied, elongated faces with huge eyes and teeth.
Understandably afraid that she might be losing her mind, the woman was almost relieved to receive a diagnosis of Charles Bonnet syndrome, which occurs in patients with rapidly deteriorating vision. Accustomed to constant input, the brains of patients with this condition simply make up their own input to replace whatever is missing.
The resulting hallucinations are usually more benign, such as flashes of color or small animals. In this woman’s case, the bloodcurdling visions became less frequent once she was diagnosed.
I'm happy for this woman and glad there was a minor explanation for her visions. Getting older certainly isn't for sissies!
Coffee is gonna be outside again