Literature is not really art appreciated through vision. It is a mental exercise. Reading by seeing the text is just one form of uploading the text into your brain; Braille and audio are two others. The layout and appearance of the text can add to the experience, but this is mostly¹ not required except to make reading the text as relaxed and comfortable as possible.

For a blind person sculpture can surely be as engrossing as for a sighted person.

1: Notable exceptions exist; e.g., House of Leaves.