Pseudopapilledema in Kenny-Caffey syndrome.

A 21-year-old man with Kenny-Caffey syndrome had been observed since 1993 for hyperopia. Fundus examination revealed swollen optic disks. Further examinations (fluorescein angiography, B-scan ultrasonography, and optical coherence tomography) confirmed the optic nerve head elevation. The authors report a rare case of Kenny-Caffey syndrome with extreme pseudopapilledema. Although uncommon, ophthalmologists should be mindful of this disorder when a patient presents with characteristic findings because severe electrolyte disturbances may complicate the clinical course.