Turbit definition, one of a breed of domestic pigeons having a stout, roundish body, a short head and beak, and a ruffled breast and neck. See more. Dictionary.com
The anterior angle. Lesions that involve the anterior angle of the chiasm, the point at which the optic nerve passes into and forms the chiasm, may show a junctional scotoma (Traquair, 1949) since there is at this point separation of the crossing and uncrossed fibers.
Compression by the internal carotid arteries can injure the lateral fibers on each side of the optic chiasma. An MRI may be used to diagnose a tumor in the chiasma area. Damage to the optic chiasma can cause impaired vision. Those with tumors in the chiasmal area may have headaches and vision problems.