Anatomic relationship of the optic radiations to the atrium of the lateral ventricle: description of a novel entry point to the trigone.

Objective: The aim of this study was to delineate the anatomic relationship of the optic radiations to the atrium of the lateral ventricle using the Klingler method of white matter fiber dissection. These findings were applied to define a surgical approach to the trigone that avoids injury to the optic radiations.

Methods: Sixteen cadaveric hemispheres were prepared by several cycles of freezing and thawing.