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Optic Chiasm
The optic chiasm is an X-shaped junction just below the cerebral cortex at the front of the brain where the optic nerves from the two eyes meet. At this point, information from the right visual field of both eyes is routed to the left side of the brain, while information from the left visual field is routed to the right side of the brain.
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Optic Chiasm
Blind Spot
A patient has suffered an injury that resulted in a complete loss of vision in their left eye. Medical scans confirm that the light-detecting cells at the back of the left eye are functioning perfectly, and the visual processing centers in the brain are also completely undamaged. Given this information, which of the following is the most likely explanation for the patient's blindness?
A patient experiences a complete loss of vision in their right eye. An ophthalmologist confirms that the light-sensitive cells at the back of the eye are functioning perfectly, and the structures that focus light onto these cells are undamaged. Based on this information, what is the most likely cause of the patient's blindness in that eye?