The characteristic field defect seen in pituitary tumors is
Ans. (d) Bitemporal hemianopiaRef: Harrison's 19th ed. /198-199"Bitemporal hemianopia is usually caused by tumors in the region of the sells turcica, pressure by a suprasellar aneurysm or by chronic arachnoiditis; these press upon the chiasma so that the fibers going to thenasal halves of each retina are destroyed. Tumors of the pituitary body are most common.
Homonymous hemianopia
Complete vision loss
Binasal hemianopia
Bitemporal hemianopia
Lesions of the Visual Pathway