Normal tension glaucoma following the treatment of normal pressure hydrocephalus.

A man in his 70s developed progressive normal tension glaucoma following treatment for normal pressure hydrocephalus. This treatment included cerebrospinal fluid drainage and ventriculo-peritoneal shunt insertion to lower the intracranial pressure (ICP). Subsequent retinal nerve fibre layer thinning was visible on optical coherence tomography scans and was accompanied by corresponding glaucomatous visual field defects on perimetry.