MS-3590

A 79-year-old man with no prior medical history presents with symptoms of an ischaemic stroke. During the neurological examination in the emergency department, he is alert and able to answer questions appropriately. His limbs have normal tone, power, reflexes, and sensation, but he displays some lack of coordination. When asked to perform a finger-nose test, he accuses the examiner of cheating, claiming that he cannot see their finger or read their name tag. Which specific area of his brain is likely to be damaged, causing his visual deficits?