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Topiramate is primarily used as an antiepileptic drug. It has also demonstrated effectiveness in migraine prophylaxis, depression, trigeminal neuralgia, bipolar disorders, and idiopathic intracranial hypertension. The drug has a large number of potential ocular side effects, such as acute-onset angle closure glaucoma (ACG), acute myopia, nystagmus, diplopia, photosensitivity, suprachoroidal effusions, peri-orbital edema, and blepharospasm.

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Background: Topiramate is a drug which emerged from its anticonvulsant properties and now over the years is used for a wider range of indications, including migraine prophylaxis. We described a very rare case of topiramate induced acute onset myopia during use for migraine. It is the first reported case of its kind from Sri Lanka with only a handful of reported cases in world literature.

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Background: A case is reported of acute bilateral myopia and angle closure glaucoma in a 7-year-old patient from topiramate toxicity. This is the second known reported case of topiramate induced acute angle closure glaucoma and third known reported case of topiramate induced acute myopia in a pediatric patient.

Case Presentation: This case presents a 7-year-old who had recently begun topiramate therapy for seizures and headache.

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Several lines of scientific evidence showed that topiramate may induce psychotic symptoms when used as monotherapy. It has been postulated that this topiramate effect may be caused by the inhibition of frontal and prefrontal areas induced by topiramate. The clinical history of the patient described shows that topiramate may also induce psychosis when used in polytherapy.

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Background: Topiramate is an anticonvulsant medication commonly used for a variety of neurological disorders including migraine prophylaxis. Broadened use of topiramate has brought an increased awareness of toxicity from this medication, particularly central nervous system side effects and metabolic acidosis.

Objective: We describe a case of topiramate toxicity occurring in a 22-year-old female following the ingestion of two 200 mg tablets, which she was prescribed for the treatment of migraines.

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