en_tn/isa/29/18.md

the deaf will hear the words of a book, and the eyes of the blind will see out of the deep darkness

Possible meanings are 1) this is literal and Yahweh will cause deaf people to hear and blind people to see or 2) this is a metaphor that means Yahweh will enable the people to hear and understand his message or 3) it may mean both options 1 and 2. (See: rc://en/ta/man/jit/figs-metaphor)

the eyes of the blind

Here "eyes" represents the whole person. Alternate translation: "those who are blind" (See: rc://en/ta/man/jit/figs-synecdoche)