Iridoplegia is a medical condition characterized by a paralysis of the iris resulting in a lack of pupillary response to light. Some synonyms for iridoplegia include iris paralysis, fixed pupil, and tonic pupil. Another term commonly used to describe this condition is Adie's pupil, which refers to a specific type of tonic pupil caused by damage to the ciliary ganglion. Other neurological disorders that can cause similar symptoms include Horner's syndrome and oculomotor nerve palsy. These conditions can result in a variety of symptoms, including blurry vision, double vision, and reduced depth perception, making it important for those affected to seek medical attention promptly.