What Is Charles Bonnet Syndrome?
The cause of CBS is not well understood, but it is thought to be related to the brain continuing to interpret images, even in their absence. There are many underlying diseases of vision loss that are associated with CBS, such as macular degeneration and stroke. Hallucinations may resolve in instances where the the underlying vision issue can be corrected (such as with cataracts). Treatment differs depending on the impact symptoms have on a person's life. Some people are taught to block their hallucinations, while others may benefit from antipsychotic medications.
Source: Genetic and Rare Diseases (GARD) Information Center