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A 25-month-old girl with vision loss, nystagmus, and anomalous head posture
Digital Journal of Ophthalmology 2009
Volume 15, Number 1
February 23, 2009
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Joel Metzger, MD | Senior Flight Surgeon, Training Air Wing Six, Pensacola, FL, USA
Richard Hertle, MD | Children's Hospital of Pittsburgh, Pittsburgh, PA, UPMC Eye Center, Eye & Ear Institute, Pittsburgh, PA, and University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
John Avallone, MD | Ophthalmology Associates of Greater Annapolis
Edward Cheeseman, M.D. | University of South Carolina School of Medicine, Charleston, SC and Uniformed Services University of the Health Sciences, Bethesda, MD, USA
Ancillary Testing
Oculographic recording showed constant, symmetric, multiplanar involuntary oscillations, which varied from 1.5-7 Hz with jerk, asymmetric pendular and bidirectional jerk slow phases (Figure 2).
Figure 2
Ocular motility recording showing position trace OU and velocity trace OS at the time of diagnosis (right gaze is up and left gaze is down). The recording shows well-developed jerk and bidirectional jerk waveforms with periods of foveation, typical of infantile nystagmus syndrome.