[Unilateral optic atrophy in a 9-year-old patient]. / Einseitige Optikusatrophie bei einem 9-jährigen Patienten.

A 9­year-old patient presented with a reduction of visual acuity in the left eye, which was incidentally noticed 2 weeks previously. Funduscopy revealed a mild vitritis, a pale optic disk, narrowed blood vessels and an increased reflex of the retinal surface. The values in the blood examination were normal apart from eosinophilia and an elevated immunoglobulin E (IgE) antibody titer.