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This is a case report of a 3-year-old boy who presented with unilateral anterior uveitis and tonic pupil following varicella-zoster virus (VZV) Infection. The patient had red and irritated eyes and photophobia. Ophthalmological findings included anterior uveitis and tonic pupil accompanied by reduced vision and accommodation. An MRI of the cerebrum was normal. To ease the symptoms the patient was prescribed photophobia glasses with correction of hyperopia. Tonic pupil due to VZV infection is a rare complication, but may have long-term consequences, why patients with eye-involving VZV infection need to be examined by an ophthalmologist.