Captain Hatrack woke up one morning feeling funny and not seeing too well.He went to the ophthalmologist,Dr.Eye,who told him that he experienced a small stroke and has developed a left hemianopsia.Dr.Eye told the Captain that he had to stop driving immediately.The Captain is very upset because he feels as if he is seeing everything in his field and that all he needs is a better pair of glasses; he thinks the doctor is a quack and he can drive just fine.Which one of the following provides the best explanation for why the Captain does not realize he has a field deficit?

Question

Quizplus · Accepted Answer

The Captain is experiencing left hemianopsia, which means he has lost half of his field of vision on the left side. The phenomenon of perceptual completion explains why he might not realize he has a field deficit. This is where the brain fills in the missing parts of the visual field, making the person unaware that they are not actually seeing everything. This is different from conditions like cataracts, which affect the clarity of vision rather than the field of vision, or confusion, which is a more general cognitive impairment.

Captain Hatrack Woke Up One Morning Feeling Funny and Not