Benign Episodic Unilateral Mydriasis
Also known as springing pupil, benign episodic unilateral mydriasis typically occurs in young, healthy individuals who frequently have a history of headache. Episodic mydriasis may last from minutes to hours and may be accompanied by mild blurring of vision, periocular discomfort, and headache. Each episode is self-limited, and the condition has not been associated with any systemic or neurologic disease.
Jacobson DM. Benign episodic unilateral mydriasis: clinical characteristics. Ophthalmology. 1995;102(11):1623–1627.
Excerpted from BCSC 2020-2021 series: Section 5 - Neuro-Ophthalmology. For more information and to purchase the entire series, please visit https://www.aao.org/bcsc.