Lavin P J, Traccis S, Dell'Osso L F, Abel L A, Ellenberger C
Ann Neurol. 1983 Jun;13(6):621-4. doi: 10.1002/ana.410130607.
Downbeat nystagmus in primary position and oscillopsia resulted from nutritional deficiency during prolonged intravenous therapy of a patient with hyperemesis gravidarum. Wide bandwidth infrared oculography demonstrated a pseudocycloid nystagmus waveform with an increasing-velocity exponential slow phase. Because the oscillopsia decreased and the nystagmus was damped with convergence, visual acuity improved with the addition of base-out prisms to each spectacle lens.
一名妊娠剧吐患者在长期静脉治疗期间因营养缺乏导致原在位下跳性眼球震颤和视振荡。宽带红外眼动图显示为假环状眼球震颤波形，慢相速度呈指数增加。由于视振荡随着集合动作而减轻且眼球震颤受到抑制，在每个眼镜镜片上加底向外棱镜后视力得到改善。
