Posterior ischemic optic neuropathy after hemodialysis.
OBJECTIVE
To report a case of visual loss from posterior ischemic optic neuropathy (PION) after hemodialysis.


METHODS
Observational case report.


METHODS
Neuro-ophthalmic examination, neuro-imaging including computed tomography (CT) scan, magnetic resonance imaging (MRI) of the head and orbits, and magnetic resonance angiography (MRA) of the neck and cerebral vasculature, as well as electrophysiologic testing including electroretinogram (ERG) and visually evoked response (VER) were performed.


RESULTS
Acute onset of painless bilateral no light perception vision with absent pupillary response to light and normal funduscopic examination occurred shortly after completion of hemodialysis. Computed tomography scan and MRA results were normal. Magnetic resonance imaging scan showed small vessel ischemic white matter changes. Electroretinogram results were normal and the VER was unrecordable.


CONCLUSIONS
Visual loss after hemodialysis is a rare complication and is associated with anemia and hypotensive events. The visual loss is usually a result of anterior ischemic optic neuropathy. We were unable to find another instance in the literature of visual loss after hemodialysis resulting from PION.
Buono
Lawrence M
LM
Neuro-Ophthalmology Service, Wills Eye Hospital, Thomas Jefferson Medical College, Philadelphia, Pennsylvania, USA.
Foroozan
Rod
R
Savino
Peter J
PJ
Danesh-Meyer
Helen V
HV
Stanescu
Dinu
D
D000328:Adult; D001766:Blindness / Q000175:diagnosis / Q000209:etiology; D004596:Electroretinography; D005074:Evoked Potentials, Visual; D006801:Humans; D007676:Kidney Failure, Chronic / Q000628:therapy; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D008297:Male; D018917:Optic Neuropathy, Ischemic / Q000175:diagnosis / Q000209:etiology*; D006435:Renal Dialysis / Q000009:adverse effects*; D014057:Tomography, X-Ray Computed