| 释义 |
Wilbrand's knee Wilbrand's knee That portion of the decussating optic nerve fibres from the inferior nasal retina which loop forward into the contralateral optic nerve for a distance of up to 3 mm from the anterior part of the optic chiasma and then pass backward into the optic tract. The existence of Wilbrand's knee in normal subjects has been questioned. See junction scotoma. |