Bilateral Reversible Corneal Edema as a Novel Side-Effect of Levetiracetam - A Case Report.

Purpose: We present a case of levetiracetam-induced corneal edema. To the best of our knowledge, this is the first documented case of bilateral reversible corneal edema secondary to levetiracetam use.

Patients and methods: A 59-year-old woman was referred to the ophthalmology department with a few weeks' history of bilateral blurring of vision. She is a known case of secondary progressive multiple sclerosis, and she was started on levetiracetam by her neurologist a few weeks prior to referral in view of new seizure activity. Examination revealed bilateral clinically evident corneal edema, which was documented on corneal topography.

Results: Upon levetiracetam dose reduction, symptoms started to improve and eventually the medication was stopped altogether. The patient's vision and corneal edema normalized on follow-up.

Conclusion: This novel side effect should be kept in mind when a patient who is on levetiracetam presents with corneal edema as this can avoid misdiagnosis and unnecessary interventions.