What does the character see in the medicine bag story

"to tell it right, it was through you i found my life and breathed again, and then through you my eyesight failed." this quote is from oedipus the king, explain why it's significant, paying special attention to word choice, figurative language, and the larger themes it reflects.

1. a poem that tells a story irony 2. taking on human characteristics narrative 3. a direct comparison between two things personification 4. words that are opposite the thoughts in a speaker's mind simile 5. implied comparison introduced with "as" and "like idiom 6. one's own manner of speaking metaphor

What element of medieval literature does the disappearance of the sword into the lake represent?