Albino-type misrouting of the optic nerve fibers not found in dissociated vertical deviation

It has been suggested that albinolike misrouting of the visual pathway occurs in patients with dissociated vertical deviation (DVD). We re-examined this contention in ten DVD patients using visually evoked potentials. Full-field monocular pattern-onset checkerboard stimulation was employed. The visu...

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Bibliographic Details
Published inGraefe's archive for clinical and experimental ophthalmology Vol. 230; no. 2; p. 158
Main Authors Bach, M, Kommerell, G
Format Journal Article
LanguageEnglish
Published Germany 1992
Subjects
Adolescent
Adult
Aged
Albinism, Ocular - physiopathology
Albinism, Oculocutaneous - physiopathology
Child
Evoked Potentials, Visual
Humans
Middle Aged
Optic Nerve - physiopathology
Pattern Recognition, Visual
Strabismus - physiopathology
Visual Pathways
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Summary:It has been suggested that albinolike misrouting of the visual pathway occurs in patients with dissociated vertical deviation (DVD). We re-examined this contention in ten DVD patients using visually evoked potentials. Full-field monocular pattern-onset checkerboard stimulation was employed. The visually evoked potentials were recorded simultaneously from both occipital lobes. Their differential activity during stimulation of the right eye was compared with that obtained during stimulation of the left. We found no predominance of crossed projection in any of the DVD cases. The results in nine normal subjects were similar. In 13 albino patients, however, there was a relative positivity in the contralateral hemisphere about 100 ms after pattern-onset, which reconfirmed predominance of the crossed projection. Possible artifacts are discussed that may have led to the assumption of misrouting in DVD in two previous reports.
ISSN:0721-832X
DOI:10.1007/BF00164655