text: Yo, check it out, I got a study to report,
  About general anesthesia and its post-op support.
  Forty patients, ophthalmologic surgery in sight,
  No tissue trauma, just a peaceful night.
  
  Split into two groups, let me break it down,
  Twenty with neurolept analgesia, the other's halothane crown.
  Duration of anesthesia, patient age in line,
  Compared to gynecological cases, this study's prime.
  
  Total protein, cholinesterase, levels were fine,
  GOT, GPT, LDH, GLDH, AP, LAP, and gamma-GT, they didn't decline.
  Post-op, up to twelve days, everything was cool,
  Except for total bilirubin, acting like a fool.
  
  Similar changes as gynecological cases, that's the catch,
  Now let's discuss the possible causes, no need to detach.