Configuration of the optic chiasm in humans with albinism as revealed by magnetic resonance imaging.

Abstract:

PURPOSE:To determine whether the size and configuration of the optic chiasm in humans with albinism is different from that in normal control subjects. METHODS:Seventeen patients and 15 control subjects underwent magnetic resonance imaging of the entire head. Images were reformatted to the chiasm region and analyzed with observer-independent morphometry and measurements by a blinded observer. RESULTS:The albino group showed significantly smaller chiasmatic widths, smaller optic nerves and tracts, and wider angles between nerves and tracts. Statistical morphometry showed a different configuration of the optic chiasm. CONCLUSIONS:Size and configuration of the optic chiasm in humans with albinism are distinctly different from those in normal control subjects and reflect the atypical crossing of optic fibers.

authors

Schmitz B,Schaefer T,Krick CM,Reith W,Backens M,Käsmann-Kellner B

doi

10.1167/iovs.02-0156

keywords:

subject

Has Abstract

pub_date

2003-01-01 00:00:00

pages

16-21

issue

1

eissn

0146-0404

issn

1552-5783

journal_volume

44

pub_type

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