Abnormality irregular shaped pupil; Pupillary pathology; the irregular pupil; structural causes; synechia of the iris to the lens after surgery or inflammation (iritis); Axonfeld-Rieger Syndrome; iris atrophy (ICE syndrome); iris coloboma; sphincter damage due to ischemia; sphincter damage due to trauma (tears of sphincter or diffuse damage to muscle); sphincter damage due to herpes Zoster uveitis; sphincter damage due to high intraocular pressure; iris tumor or cyst; ectropian uveae; innervational causessympathetic segmental; renervation of dilator muscle; sympathetic segmental aberrant regeneration (rare); sympathetic nerve segmental dilator activation (tadpole pupil); Adie's pupil; third nerve aberrant regeneration of the iris sphincter; central causes - central corectopia; Tadpole Pupil
Infrared video recording of the patient shown in the previous slide showing a magnified view of the transient pulling on the dilator muscle, causing an irregular pupil. This patient had transient segmental sympathetic activation of her dilator muscle causing the lower part of the pupil at the 7 o'clock meridian to pull apart resulting in an elongation of the pupil.
Location of lesion is postganglionic sympathetic nerve activation (segmental)
transient episodes of right pupil dilation and irregularity of shape, tadpole pupil
Spencer S. Eccles Health Sciences Library, University of Utah