Possible Clues:

• A small cut is required in this theatrical performance
• Precise operation suitable for lockjaw?
• Op art in miniature?
• Laparoscopy essential -- her role Guy's set out
• Remedial treatment for peeping Tom?
• Work in theatre performed with minimal cuts
• Entry limited to this work in theatre?
• Medicine that's advanced poorly Greek hourly? Yes
• Operation that may allow access to skeleton?
• Medical intervention that's important here's roughly done exposing hospital?