Answer:
It means that the functioning of these people's eyes is not efficient, or that these eyes have no functioning at all.
Explanation:
When an individual says that a person is handicapped, he means that that person has organs and body structures that do not work properly or that do not work at all, that is, he has a deficient functioning.
Based on this, we can say that when Mahoney says that those who can see are “handicapped”, he is referring to the lack of functioning of these people's eyes.
