• Am. J. Ophthalmol. · Jan 2004

    Case Reports

    Mechanism of topiramate-induced acute-onset myopia and angle closure glaucoma.

    • Jamie E Craig, Terrence J Ong, Damien L Louis, and Jane M Wells.
    • Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, Australia. jamie.craig@flinders.edu.au
    • Am. J. Ophthalmol. 2004 Jan 1; 137 (1): 193-5.

    DesignInterventional case report.MethodsIn an institutional practice setting, two women, aged 25 and 45, developed acute myopia after starting topiramate for epilepsy. One patient also developed bilateral angle closure glaucoma.ResultsTopiramate was discontinued. Anterior chamber shallowing was noted in both patients at presentation. Ultrasonography showed ciliochoroidal effusion. Baseline measurements of anterior chamber depth and lens thickness were obtained.ConclusionsTopiramate may be associated with ciliochoroidal effusion with forward displacement of the lens-iris diaphragm and anterior chamber shallowing, resulting in acute myopia and angle-closure glaucoma. Increased lens thickness contributes only minimally (9%-16%) to anterior chamber shallowing.

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