Two additional scenarios for see-saw nystagmus: achiasma and hemichiasma.
نویسندگان
چکیده
The discovery of canine achiasma and hemichiasma has been followed by the identification of human achiasma (four individuals, to date). See-saw nystagmus was present in all cases of achiasma (canine and human) and in one of two cases of canine hemichiasma studied. Human infants with see-saw nystagmus should be imaged for possible structural abnormalities of the optic chiasm.
منابع مشابه
The congenital and see-saw nystagmus in the prototypical achiasma of canines: comparison to the human achiasmatic prototype
We applied new methods for canine eye-movement recording to the study of achiasmatic mutant Belgian Sheepdogs, documenting their nystagmus waveforms and comparing them to humans with either congenital nystagmus (CN) alone or in conjunction with achiasma. A sling apparatus with head restraints and infrared reflection with either earth- or head-mounted sensors were used. Data were digitized for l...
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متن کاملSee-saw nystagmus.
See-saw nystagmus is a rare ocular abnormality, only 15 cases having been recorded to date (Maddox, 1914; Rucker, 1946; Larsen, 1957; Jensen, 1959; Smith and Mark, 1959; Mark, Smith, and Kjellberg, 1960; Lourie, 1963; Schurr, 1963; Kinder and Howard, 1963; Slatt and Nykiel, 1964; and Daroff, 1965). As initially described by Maddox (1914), the eye movements consist of regular reciprocating oscil...
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Before the 1991 report of achiasma in dogs,l there was general acceptance that all vertebrates had de cussation at the optic chiasm.2 Exactly how, within the space of a few years, the achiasmatic condition came to be recognized in two mammalian species is an interesting confluence of interpersonal scientific communication and some serendipity. "Serendipity," a word coined by Walpole in a lette...
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ورودعنوان ژورنال:
- Journal of neuro-ophthalmology : the official journal of the North American Neuro-Ophthalmology Society
دوره 18 2 شماره
صفحات -
تاریخ انتشار 1998