Splice of Life by Sonya Dorman (Orbit #1, 1966) begins with a woman in hospital getting a hypodermic syringe inserted between her bottom eyelid and eye. The rest of the narrative is a surreal nightmare-ish piece where she sees things (even though her eyes are bandaged), thinks there is a dog under her bed, learns she was probably in a car accident, and talks to a ten-year-old boy, and a nurse with an odd verbal tic.
The story finishes with her overhearing a doctor’s conversation (spoiler), which gives her the impression she is continually being wounded so the hospital can re-use her for ophthalmologist training courses (I think).
I didn’t get this at all the first time around, and even on reread I’m not sure it is particularly clear, or convincing.
* (Mediocre). 2,400 words.