Zoopsia is a rare medical condition that causes visual hallucinations. Commonly known as Charles Bonnet syndrome, this disorder can be caused by various underlying health conditions. While there are no direct synonyms for zoopsia, certain terms can be used to describe its effects and symptoms. For instance, hallucinations can be categorized as illusions, delusions, or phantoms, depending on their nature. Visual distortions, such as seeing geometric patterns or bright flashes of light, may also be indicative of zoopsia. Other terms that could be relevant to this condition include metamorphopsia, which refers to a distorted perception of shapes, and hemianopia, a condition that causes visual loss in one half of the visual field.