**Core Concept**
Lesions of the optic tract affect the visual pathway after the optic chiasm, leading to contralateral homonymous hemianopia. This type of visual field defect is characterized by loss of vision on the same side in both eyes.

**Why the Correct Answer is Right**
Optic tract lesions result in contralateral homonymous hemianopia due to the decussation of optic nerve fibers at the optic chiasm. These fibers then continue in the optic tract, which is responsible for transmitting visual information from the contralateral visual field. When the optic tract is damaged, the corresponding area of the visual field is lost in both eyes.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is likely incorrect, as optic tract lesions do not typically present with bitemporal hemianopia, which is more characteristic of lesions affecting the optic chiasm.

**Option B:** This option may be incorrect, as optic nerve lesions typically result in unilateral visual loss, not contralateral homonymous hemianopia.

**Option C:** This option is likely incorrect, as lesions of the lateral geniculate nucleus can result in a variety of visual field defects, including quadrantanopia, but not contralateral homonymous hemianopia.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that lesions affecting the optic tract can result in contralateral homonymous hemianopia, which can be a key diagnostic clue in patients presenting with visual field defects.

**Correct Answer:** C. Contralateral homonymous hemianopia