Abstract
Accurate eye movement recordings of sixty-five subjects with congenital nystagmus (CN) provides a firm foundation for the classification of the many types of wave-forms observed and results in objective definitions based on measurable quantities rather than subjective clinical impressions. The careful scrutiny of these records along with the utilization of laser-target retinal cinematography have yielded insights into the mechanism of this ocular motor instability.
Prolongation of target foveation emerges as the dominant factor in many of the resultant waveforms. This enhances the visual acuity of the subject with CN. An additional observation, related to fixation bias reversals of the CN subject, may be a physiological indicator of foveal function.
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From the Ocular Motor Neurophysiology Laboratory, Neurology Service, Miami Veterans Administration Hospital and Department of Neurology, University of Miami School of Medicine, Miami, Florida.
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Dell'osso, L.F., Daroff, R.B. Congenital nystagmus waveforms and foveation strategy. Doc Ophthalmol 39, 155–182 (1975). https://doi.org/10.1007/BF00578761
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DOI: https://doi.org/10.1007/BF00578761