In a case of a pituitary tumor, what would you expect to be the consequence on vision?

The correct answer highlights that peripheral vision loss is expected in the case of a pituitary tumor. This occurs primarily due to the anatomical position of the pituitary gland, which is located beneath the optic chiasm. As a tumor develops in the pituitary gland, it can grow upward and compress the optic chiasm. This compression typically affects the crossing fibers, which are responsible for peripheral vision from both eyes.

As a result, patients often experience bitemporal hemianopsia, which is a loss of vision in the outer (temporal) fields of both eyes. This leads to difficulties in peripheral vision while central vision may remain intact. This is a common consequence of pituitary tumors, distinguishing it from other visual disturbances like blurred vision, color blindness, or hazy vision, which are less directly associated with this type of tumor and its effects on the optic pathways.