Here are some examples:
* Biopsy: The examination of a sample of tissue to diagnose disease.
* Colonoscopy: The examination of the colon using a flexible, lighted tube.
* Endoscopy: The examination of the inside of a body cavity or organ using a flexible, lighted tube.
* Laparoscopy: The examination of the abdomen using a thin, lighted telescope.
The "-opsy" suffix indicates that the procedure involves visual examination.