Which of the following best describes the effect of injury or trauma to the right visual cortex on vision?

• A. Complete blindness in the right eye only
• B. Loss of vision in the left visual field of both eyes
• C. Loss of color vision in both eyes
• D. Loss of vision in the right visual field of both eyes

Answer: (B)

Verified step by step guidance

1. Understand that the visual cortex processes visual information from the opposite visual field, meaning the right visual cortex processes information from the left visual field of both eyes.
2. Recall that injury to one side of the visual cortex typically causes loss of vision in the contralateral (opposite) visual field, not just one eye.
3. Recognize that complete blindness in one eye is usually due to damage to the eye itself or the optic nerve before the optic chiasm, not the visual cortex.
4. Note that loss of color vision (achromatopsia) is a different condition and not typically caused by damage limited to the right visual cortex.
5. Conclude that damage to the right visual cortex results in loss of vision in the left visual field of both eyes, because the visual fields from both eyes overlap and are processed contralaterally.