Definition
The Adie tonic pupil (ATP) is characterized acutely by a dilated ipsilateral pupil with an impaired light reaction. Over time the pupil becomes smaller (i.e., “little old Adie”) and develops a tonic near reaction (light-near dissociation). ATP is caused by damage to the parasympathetic innervation to the eye at the level of the ciliary ganglion or postganglionic fibers.
Etiology
ATP is caused by damage to the parasympathetic innervation to the iris and ciliary body at the ciliary ganglion or postganglionic nerves. Initially, the pupil reacts poorly to both light and accommodation and thus can mimic a pharmacologically dilated pupil. Over the next few days to weeks after the acute denervation, however, postganglionic axons can regenerate, but some regeneration may occur aberrantly. Normally, there are up to 30 times more parasympathetic axons arising from the ciliary ganglion and...
Further Reading
Jacobson DM (1990) Pupillary responses to dilute pilocarpine in preganglionic 3rd nerve disorders. Neurology 40(5):804
Jacobson DM (1994) A prospective evaluation of cholinergic supersensitivity of the iris sphincter in patients with oculomotor nerve palsies. Am J Ophthalmol 118(3):377
Leavitt JA, Wayman LL, Hodge DO, Brubaker RF (2002) Pupillary response to four concentrations of pilocarpine in normal subjects: application to testing for Adie tonic pupil. Am J Ophthalmol 133:333
Sakai T, Shikishima K, Mizobuchi T, Yoshida M, Kitahara K (2003) Bilateral tonic pupils associated with neurosyphilis. Jpn J Ophthalmol 47(4):368
Thompson HS (1977) Adie’s syndrome: some new observations. Trans Am Ophthalmol Soc 75:587
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Rahman, E.Z., Espino Barros Palau, A., Lee, A.G. (2015). Anisocoria: Big Pupil. In: Schmidt-Erfurth, U., Kohnen, T. (eds) Encyclopedia of Ophthalmology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35951-4_526-1
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DOI: https://doi.org/10.1007/978-3-642-35951-4_526-1
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