Final answer:
The question deals with the theme in literature where characters with impaired vision have a profound inner sight that allows them to deeply understand the human condition.
Step-by-step explanation:
The passage inquires about the capability of seemingly weak or impaired vision to have a strange, penetrating power with the purpose of reading the human soul, suggesting a depth of perception beyond mere physical ability. This concept is often explored in literature, where characters possess an inner sight or understanding of the human condition that transcends their outward appearance. The passages provided allude to similar themes, where the characters, despite their physical limitations or surroundings, exhibit profound insight into the spiritual or emotional realms.