Acquired pendular nystagmus with voluntary inhibition.
This report documents a case of voluntary inhibition of acquired pendular nystagmus after head trauma. A 30-year-old male developed oscillopsia and decreased visual acuity, as well as findings of acquired pendular nystagmus with voluntary inhibition after head trauma. The EOG finding was horizontal 18-20 Hz bilateral symmetrical pendular nystagmus in all directions of gaze at near and distant fixation. Nystagmus did not change with 14 Prism Diopter base-out prisms on both eyes, but it was possible to abolish it intentionally. Baclofen and Clonazepam had no effect in improving the patient's symptoms and EOG finding.
Han
S H
SH
Department of Ophthalmology, Yonsei University College of Medicine and Institute of Vision Research, Seoul, Korea. shhan222@yumc.yonsei.ac.kr
Lew
H
H
Choi
Y C
YC
Lee
J B
JB
Kim
J S
JS
D000328:Adult; D004585:Electrooculography; D006801:Humans; D008297:Male; D009759:Nystagmus, Pathologic / Q000209:etiology* / Q000503:physiopathology; D005680:gamma-Aminobutyric Acid / Q000502:physiology
D005680:gamma-Aminobutyric Acid